While on the trip, Tomoya buys a toy robot he picks out for Ushio to play with after they arrive in the countryside. The next day, after staying at an inn the previous night, Tomoya and Ushio take a walk through the area and come across a field of flowers. Ushio plays in the field as Tomoya watches, but Ushio soon loses the robot in the field; they try to look for it, but to no avail. Remembering something from his past, Tomoya goes off to another area and meets his grandmother Shino Okazaki, his father's mother. She tells Tomoya how he came here with his father shortly after his mother died, and Shino tells Tomoya how his father worked very hard to support him over the years. Tomoya finally comes to terms with his father, and realizes he is not a bad father. When they go back to the field where Ushio is, she still cannot find the robot, and does not want to stop looking because it was the first thing her father ever gave her. Tomoya realizes his previous mistakes and vows to try his best for Ushio from now on, who is very happy at the prospect of being with her father. On the way home, Tomoya starts telling Ushio about Nagisa for the first time.

Winter comes and Nagisa enters the final months of her pregnancy, but she becomes sick again. On a snowy day, Nagisa goes into labor two weeks early and her family, unable to transport her to a hospital in time, is forced to have her give birth at home. After an excruciating process, Nagisa successfully gives birth to her daughter, Ushio, but the delivery and her illness combined take their toll on her and Nagisa dies moments after seeing her newborn baby. Tomoya, who has stayed by her side for the entire time, does not take the sudden turn of events well. His dream of raising their daughter together as a family is shattered.

Ushio's fever does not back down and Tomoya decides to stay home to take care of her. In case he had to leave home, he calls for both Akio and Sanae to take his place. Ushio tells Tomoya that she wants to go on a trip again like last time, but he declines and tells her that it will happen once she gets better. After resigning from his work, Akio offers him some money, but Tomoya declines his kindness and Akio states that every man has something to protect. After several months, winter arrives, and Ushio's fever still does not back down, and Tomoya seems to be getting sick too. Ushio once again ask Tomoya to go on a trip, and he ultimately accepts thinking that he might not be able to fulfill another promised wish. After they leave the house, Ushio's fever worsens, and she dies in his arms right after telling her father that she loves him. Soon after, Tomoya collapses as well.

Tomoya tries to convince Akio to talk to him about his decision to marry Nagisa. Akio, however, will only talk to him if he can get a decent hit with a baseball match. Tomoya continues to practice hitting the ball until he gets good enough to face Akio again. He finally hits a home run, and runs over to Akio to beg him to let Nagisa be with him; Akio agrees. Christmas time arrives, and as Nagisa turns twenty, she has her first drink of sake; when she is drunk, she accuses Tomoya of being attracted to Sanae. Nagisa's fever goes up again, causing her to become absent from school, but not enough to repeat another year. Tomoya soon organizes with some of their friends and previous classmates to gather at the school and celebrate Nagisa's graduation. Nagisa receives her diploma and graduates. Tomoya and Nagisa get married soon after.

The girl in the Illusionary World is dying in the snow, and the robot regrets having her take the journey. The girl can finally hear the robot, and tells him that they once existed in another world. As she hums the tune of "Dango Daikazoku", the Illusionary World starts to collapse. As the robot is swept away, the girl calls him "Papa" and disappears with the world. Back at the hill, Tomoya calls after Nagisa, and she is glad that he did so. Nagisa brings Tomoya through time, and together the voices of the robot and Tomoya note the end of his long journey. Tomoya awakens to Ushio's birth, but this time, Nagisa miraculously survives. After Nagisa watches Tomoya give Ushio her first bath, she and Tomoya see that countless orbs of light are floating throughout the city outside the window. They both sing to Ushio and from then on, Tomoya and Nagisa experience a happy life raising their daughter together, finally free of their cursed fate.

Yusuke tells Tomoya a little about his past and how he met Kouko in high school. After graduating, Yusuke went on to become a successful singer-songwriter, but ultimately it all came crashing down and he started taking drugs. When he came back to the city and saw Kouko again for the first time in years, he regretted not continuing to sing for her sake. Tomoya is offered a new position as a manager in a new electrician firm, but the deal falls through when his father is arrested. Tomoya is enraged that his father is still managing to mess up his life. Tomoya finally proposes to Nagisa, and she accepts.

Five years after Tomoya left Ushio with Sanae and Akio, he spends his days at work and spending money on smoking and drinking. Sanae and Tomoya go out together into town, and she asks him to go with her and Akio on a family trip; after Sanae continues to ask him, he accepts. The day of the trip, he discovers that both Sanae and Akio have left him and Ushio alone together. The two spend the next day and night together, and when Sanae and Akio still do not show up, Tomoya asks Ushio if she would be willing to still go on a trip, even if it was only with a person like him. The two decide to take the trip by themselves and, as they walk, Tomoya wonders where they are headed.

Nagisa and Tomoya are now a married couple living together. Nagisa tries to find work and starts working in a family restaurant with Nishina. Akio and Tomoya visit Nagisa at work and scare out a couple of customers who were hitting on Nagisa. Nagisa tells Tomoya that the old building of the school they went to is going to be torn down. Knowing that the drama club was in the old building, Tomoya freaks out and admits that he is uncomfortable with all the changes happening in their town. Tomoya and Nagisa visit Akio and Sanae, who tells them Nagisa is most likely pregnant. Akio gets angry at Tomoya at first, but he congratulates him afterwards.

Nagisa becomes increasingly bedridden due to morning sickness. Nagisa wants to give birth at home, so Sanae introduces Yagi, a midwife who is to assist in the delivery. Sanae later tells Tomoya that giving birth will be difficult because of Nagisa's weak physique and may even put Nagisa's life in danger, so they might have to choose abortion. However, Sanae leaves the choice up to Tomoya and Nagisa. Nagisa learns of her mother's worries, but she decides to go through with the birth. Akio takes Tomoya to a meadow and tells him more about the day when Nagisa nearly died. Akio carried Nagisa to the meadow and prayed for her life, and Nagisa miraculously regained consciousness. Akio tells Tomoya that while many painful and difficult things will happen, he and Sanae will always be there for Tomoya and Nagisa since they are family. Nagisa and Tomoya take a walk by the river and decide on the name Ushio for their child.

Tomoya and his friends are nearing graduation, and are discussing what they will be doing after they graduate. Kyou wishes to be a kindergarten teacher, Ryou hopes to go to a nursing school, Kotomi wants to study in America, and Youhei aspires to be a model. Tomoya still has not decided on what to do yet. Nagisa's sickness returns, making her unable to go to school and take exams. On the day of graduation, Tomoya returns home to Nagisa who wishes to take a walk with him, while holding hands.

When Tomoya brings Ushio to school he meets her teacher, who is none other than Kyou Fujibayashi and they have a conversation. After that, Tomoya goes to work and Yoshino asks him for Fuko to play with Ushio, since she likes her. Tomoya agrees to this and Fuko arrives at his house to play until the evening when she goes back home. When it is time to sleep, Tomoya uses Nagisa's song to lull Ushio to sleep. The next day, Kyou tells Tomoya about sports day at school where the parents are to participate as well. He is reluctant about it, but Ushio encourages him, which makes him change his mind. One evening, Ushio is taking a stroll to the new hospital by herself and encounters Fuko on her way. When the latter asks why she does this, Ushio says it is for no real reason. The next day, Tomoya is preparing for the meet at the Furukawa bakery with Sanae and Akio, when Ushio is suddenly struck with a fever, much to the others' shock.

After Nagisa finds out about her parents' secret past, she cannot take her mind off how she ruined their dreams, and becomes emotional and depressed. On the day of the school festival, the whole theater club realizes that Nagisa is not herself, and try to cheer her up, but to no success. As the performance starts, Nagisa breaks down, but with encouragement from Akio, who said that Sanae's and his dream was for Nagisa to make her dream come true, the play was a huge success. The next day as the sun is setting, Tomoya finally confesses his love to Nagisa in the club room. This comes as a shock for Nagisa, causing her to cry tears of joy.

After getting over Igarashi, Misae starts hanging out with Katsuki more and starts falling in love with him. One day, Katsuki realizes after going to his house with two of Misae's friends that he is in fact not Katsuki Shima, but a cat who was sent by the dying Katsuki Shima to grant Misae's wish. At the autumn festival, Misae confesses she has come to love Katsuki, but that night he disappears shortly after Misae made her wish for him to always be with her. After Tomoya wakes up, and realizes the cat showed him all this, Tomoya later tells Misae some things Katsuki did not get a chance to tell her.

In order to help Fuko out, Tomoya and Nagisa take her to stay at Nagisa's house for the time being. Nagisa's family helps with carving more starfish out of wood, and at school Tomoya and Nagisa help with passing them out to students. Later, Fuko talks about how she has wanted to attend classes, but has never been able to. Tomoya makes arrangements with Youhei, Kyou, and Ryou to act as classmates in Fuko's very first high school class, and even Sanae comes to act as the teacher.

Kotomi is still trying to play the violin, but has not improved at all; in short, her playing is painful to anyone listening. Kyou gets the idea to have Kotomi play at her first violin recital after school the day after tomorrow, and in the mean time Kotomi can practice. The day before the recital, Tomoya visits Kotomi at the school's library and eats her delicious homemade apple pie. Shortly after, Tomoya falls asleep and has a very strange dream. At the recital, Kyou blackmails several students into coming with her position as a class representative. In the end, Kotomi did not improve at all, and the recital was still very painful to listen to. When Kotomi and her friends are going home, a strange man approaches Kotomi, though leaves shortly after; Kotomi was terrified of him

On the way to school one day, Tomoya Okazaki meets a strange girl talking to herself named Nagisa Furukawa. Later in the day, Tomoya has a conversation with Nagisa during lunch and learns that she is repeating her last year of high school, and wants to join the now-disbanded drama club. After school, Tomoya goes to Nagisa's family bakery and meets her parents; he is invited to have dinner with them.

Tomoya, Nagisa, and Youhei finally find out that Yukine is respected by the two rival gangs in the city since she helps both sides' members after they get hurt. Her older brother is the leader of one of the gangs, and a young boy named Yu comes to her to find his older sister who apparently is dating a guy in Yukine's brother's gang. Youhei tells Yu that he is Yukine's brother for a time, but the truth is later revealed after Yukine takes Yu, along with Tomoya, Nagisa, and Youhei, to a bar where her brother's gang hangs out. Yukine's brother has been in the hospital since he saved a friend and got in a car accident. While heading home, three members of the rival gang think Youhei is Yukine's brother and try to fight him and Tomoya, but Tomoyo intervenes, stopping them single-handedly.

Nagisa admits to wanting to restart the drama club, and Tomoya helps Nagisa to create advertisement posters which they place around school. At school that day, Tomoya meets two other girls: a strange genius named Kotomi Ichinose, and a first-year named Fuko Ibuki. Later that day, Nagisa finds out Tomoya used to play basketball, and invites him to play a game the next day. However, it is later revealed that his father injured Tomoya's arm in a fight; as a result, he is unable to play basketball anymore.

Kotomi returns the violin to Rie Nishina and becomes friends with her. Kotomi changes her usual routine and starts attending her classes. Due to Kyou's idea, she, Ryou, Kotomi, Nagisa, and Tomoya go out together as a group and have fun in town. While out, Fuko makes an appearance in, but no one remembers her. The next day, Nagisa runs up to Kyou thinking Ryou got in a bus accident, though when they rush to the scene, they find no one was hurt; however, Kotomi has an emotional episode and collapses while screaming out. Kotomi leaves early that day, but when Tomoya, Nagisa and the Fujibayashi twins go to see her later, there is no answer at her house. After they leave, Tomoya goes back and runs into the strange man from earlier; he finds out the man is an acquaintance of Kotomi's parents.

When Mei shows up, she cleans her brother's filthy room, but cannot stay at her Youhei's all-boy dorm, so Nagisa offers to have her stay at her home while she is in town. Tomoya and Youhei easily get Kyou to help with the basketball game, and she gets pumped up after a comment about pairing up with such loser guys. For half the game, Tomoya and the others play against first-year rookies, and manage to lead by eleven points, but then the basketball team switches with their starters and the score evens out. In the very last seconds of the game, Tomoya manages to make the last shot and win the game. Afterwards, Mei goes back to her hometown.

Tomoya realizes that he met Kotomi as a kid, though only she had remembered. Back then, Tomoya had often visited Kotomi, and was her only friend. Around this time on Kotomi's birthday, her parents left for business reasons, and later that day she finds out they were killed in a plane crash. Kotomi ultimately ended up burning her father's important work before anyone could see it. While Kotomi shuts herself in her house, Tomoya comes over and starts cleaning up the garden which is overgrown with grass and weeds. Nagisa, Kyou and Ryou eventually help out too.

In order to help Nagisa reform the drama club, her friends offer their names in order to get enough members to qualify, but they still need a teacher to advice them with the club, which leads them to ask Toshio Koumura. However, he is already meant to be the adviser for the choir club, so Nagisa goes to talk with Rie Nishina about which club Koumura should advise. The next day, Nagisa finds a threatening letter in her desk, and Youhei finds out that it was Rie's friend Sugisaka who is behind it. After talking with Nagisa about Rie's past, Nagisa chooses to give up on reforming the drama club, though this does not sit well with Youhei. Tomoya and Youhei go to Yukine Miyazawa to kill time during school, and Yukine gives Youhei an idea related to basketball. The next day, Youhei approaches Tomoya and Nagisa about playing in a basketball match in order to get the choir club to back down, but Tomoya continuously refuses his offer.

Since no new members have joined the drama club, Tomoya goes to talk with Kotomi once again about joining. Tomoya takes her around school and helps her introduce herself to people to make more friends. Tomoya takes Kyou, Ryou, and Kotomi to the drama room after school, and after a round of introductions, Tomoya asks them to join the club. Kyou initially passes on the chance, but ends up giving in after her sister says she wants to join, and Kotomi joins as well. During the meeting, Kotomi leaves when she hears someone playing the violin, though when she is given the chance to play it, she is painfully horrible.

After the previous night's events, Tomoya goes to see if Nagisa is okay, and finds out that she has been physically weak all her life. While walking back from the bakery, Tomoya helps get a strange electrician out of a jam and he gives Tomoya his card, finding his name to be Yusuke Yoshino; Youhei later reveals that Yusuke is a retired professional musician. After school the next day, Tomoya helps Nagisa get more self-confidence for the drama club by acting as a new member of the club asking questions.

Tomoya and Nagisa visit Youhei, and spend some time talking with Misae and Tomoyo who comes over after them. Later, when Tomoya and Nagisa are talking with Misae privately, Tomoya starts falling asleep. It is shown how when Misae was a first-year in high school, she met a strange boy named Katsuki Shima who says he can grant her one wish in return for her cheering him up years before when he was in the hospital. Misae has a boy she likes named Igarashi, but who unknown to her already has a girlfriend. Igarashi asks Katsuki to tell her this, but he cannot tell her directly and starts crying. Misae sees Igarashi with his girlfriend, and realizes the truth; she runs away, leaving Katsuki behind.

Nagisa and her friends continue to practice for the play, such as reciting tounge twisters, choosing which music to use for the play, lighting, and stage direction. Nagisa's father rents a play on video, and Nagisa finds it very touching, plus it was the first play she ever saw. Tomoya and Akio try to find the script of the play that Nagisa is going to perform in the shed, but do not find it. The drama club has a practice the day before the school festival is to begin and it goes well. The night before the school festival, Nagisa looks for a flashlight in the shed, but bumps into some boxes and discovers photographs and diaries of her parent's pasts.