Brotherhood: Final Fantasy XV Episode Rating Graph

Prompto's backstory is revealed as he is tending to a wounded wild puppy found on the road. Initially an introverted and obese student at Noctis' school, his chance encounter and care for one of Lunafreya's puppies results in him being asked by her to be Noctis' friend. By the time the two were attending high school, Prompto had slimmed down and gained new confidence, though Noctis still recognized him from an earlier encounter and accepted him as a friend.

Noctis has set out on his journey to meet Lunafreya, during which he hears about the attack on Lucis' capital, Insomnia, and must fight off attacks from Niflheim magitek troops. He also remembers the Daemon attack in his childhood which left him seriously wounded: at the end of the episode, he encounters the Daemon again as part of a Niflheim attack force.

Gladiolus's origins with Noctis are shown within the frame of a monster encounter that turns into a friendly contest between Noctis and Gladiolus. Initially seeing him as a spoiled, self-centered child, Gladiolus's opinion is changed drastically when Noctis helps keep Gladiolus' sister Iris out of trouble by taking the blame for going outside the Citadel grounds with her. The two formed a close bond, which became a firm friendship by the events of XV.

The origins of Ignis' relationship with Noctis is revealed when the group stays in the town of Lestallum, and Ignis attempts to recreate a favorite dessert of Noctis'. As he begins to feel the effects of maintaining Lucis' magical Wall, Regis entrusts Ignis with caring for Noctis. While initially carefree, Noctis becomes disturbed when he sees how far Regis has declined, and has an argument with Ignis when confronted with his future as king. Eventually facing his position, Noctis and Ignis reconcile.