Takatoshi Tsuda, on his first day of high school, is recruited to join Ousai Academy's student council as the vice president. Shino gives him a tour of the school. They go over some school rules and start a suggestion box. Hata interviews Shino for the school paper, but the process seems to resemble that of an eroge.

Takatoshi is surprised to find Uomi at his house, ready to make dinner. Shino arrives with food and they have friendly rivalry. They watch a DVD of an old film and stay the night. Aria and Suzu visit the next day and help clean. Hata tries to figure out some slogans for the council members, and rumors arise concerning Takatoshi and Shino. Igarashi slips on the stairs but is saved by Takatoshi. As Aria and Shino go to graduation, Takatoshi and Suzu do some council activities on their own. Takatoshi and Suzu catch up to Aria and Shino and ask why they are leaving without saying goodbye. They then reveal that they have not graduated yet (it was the end of Takatoshi’s first year) and they are actually holding sushi rolls, of which they make dirty jokes.

The student council celebrates the new year. Yokoshima catches a cold. Takatoshi receives chocolates for Valentine’s Day. Kotomi does her entrance exam and interview for Ousai.

The council review some of the school rules. The council plans surprise club inspections but is concerned about leaks. They try using a secret code involving tops and bottoms, which is misinterpreted by Hata. Takatoshi helps Shino with her cellphone but is shocked by her message. The council and Kotomi visit Eiryou High School for their cultural festival. As winter comes, the council shovels snow at school and have stew party in the dark at Takatoshi’s house. At night, Shino dresses as Santa and gives everyone presents.

Aria and Shino sell an SYD bicycle. Jokes about lettering. The council receives some gifts from various clubs. Shino tries out the different clubs, and finds she is good at everything. Takatoshi and Kotomi pull out a telescope; the council girls join them to look at the stars. The council gets the school swimming pool ready for use. The day of the pool opening, Shino forgets to bring underwear. Takatoshi and Kotomi compare grades. Yokohama has an English lesson.

The council goes to the beach again, this time to help Yokohama scout the place for a school trip. Yokohama chases a boy and gets drunk again so they stay at the inn. At night, they have a test of courage which freaks Suzu out. They also hear mysterious tappings on the wall. Afterwards, they visit Takatoshi's house to study. The council prepares inventions for the school fair. Shino gets lonely and calls everyone individually and converses with them. Suzu has an overnight study party where they take a break to walk Boa. Takatoshi and the Squid episode where he tries to explain to Suzu but they are seen by the other girls. Takatoshi confronts Kotomi about the edited photo where he poses in speedos as a muscleman.

The council visits the robot research club. More daily school life gags. Kotomi walks to school as the credits roll. The council recaps highlights from the series with a bit of revisionist history.

Some gags about the art pieces in class. Suzu feels under the weather so the council has her rest in the infirmary for the school day. Shino shows Uomi the different locales on campus, but they interpret each place with something sexual. Uomi offers some concerns about the placement of the men's restroom. Aria has a spot on guessing an object based on its silhouette shape. Gags about allergies and mouse pads. Takatoshi makes a poster. The girls ask Takatoshi for tissues. Uomi asks Takatoshi if there's a girl he likes. And a follow-up to the squid episode where Hata is done with her part but Aria shows up.

Ousai Academy starts a new school year. Suzu's dog, Boa, visits the school. Takatoshi's little sister joins as a first year. The student council gets concerned about improper relationships at school. Another squid scene with Takatoshi where he sprays milk on a model butt. Mutsumi sets up a match with Toki, where Toki would have to join the judo club if she loses.

The council prepares for sports day. Takatoshi writes a surprisingly touching story. The council participates in various sports day events for their class, and then as a team for the final group relay.

The council visits Aria's home and meets her maid Dejima. Takatoshi sees school reporter Hata on her daily activities. The school conducts a cultural festival.

Uomi appears at the school in Shino's gym clothes, as her own clothes got wet from the rain. She observes the council as they do their activities in the office. Hata interviews them. Shino and Takatoshi walk the halls. Kaede-chan has a segment where she walks the halls and observes each of the student council girls. In the squid segment, Takatoshi is approached by Aria, who then runs away. Nene has a trivia segment about the history of dildos. Takatoshi and the gang study at the library. Takatoshi and Kotomi have to take make-up exams, so they have a study session with the council girls at their house. Aria does a "what is this?" segment; the object is a vibrator. For Golden Week, the council members visit Aria's company amusement park and test the rides. They enjoy a dinner afterwards.

The council investigates some of the scary school legends. Yokoshima shows the council a porn magazine she confiscated. The council visits Mutsumi's judo club. Shino gets the hiccups. The council prepares for a day at the beach.

The council members visit a New Year’s sale. They talk about New Year’s resolutions. Squid and Takatoshi segments are back: Takatoshi removes milky slime off of Suzu’s jacket. Jokes about shoes, lunch. Mutsumi recruits for a judo team manager, and does other activities with the team. Dejima teaches the council girls how to make chocolate for Takatoshi. Nene’s history lesson is about a plant stalk that is the shape of a dildo. While shopping for White Day gifts, Takatoshi meets Uomi, and then the other girls gather. To conclude the Squid and Takatoshi segments, Takatoshi checks the girls for alibis. Shino makes lunch for the Tsudas. Afterwards, when Tsuda says goodbye to Shino, he surprisingly meets with Uomi, which makes the girls jealous.

Shino is recruited to become a Japanese idol. She pictures life as one, where she gets along with the staff and does quite well at the tasks given, including modeling and singing at concerts. But when she sees Takatoshi dating a girl that resembles her, she wakes up from her dream and declines the offer. The girls ponder self-defense strategies and take lessons from the judo club. Igarashi is especially worried as it means having to interact with Takatoshi. Aria has another guessing game involving what is going on a steamy car in traffic. In the Takatoshi and Squid segments, Suzu helps Takatoshi clean up. Aria and the other girls are concerned about what they have observed.

Takatoshi has a cold and receives a visit from Shino, whose activities are misinterpreted by Takatoshi's sister Kotomi. Later, Shino must honor her commitment of being photographed at the swimming pool. Aria asks Shino for advice on a crush she has. Yokoshima tries to trap Takatoshi in a classroom. The council makes a web page.