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.

Tomoyo speaks to Yukine and the others about hearing that the police will start to get involved in the fight between the two gangs if it gets any worse. Trying to stave off a major brawl, Yukine goes with Tomoya to try to talk the other gang out of a fight, and the leader settles on a fight between him and Yukine's brother Kazuto. Youhei reluctantly goes to stand in for Kazuto, but is incapacitated along with everyone else but Tomoya after eating Sanae's bread, so Tomoya fights the leader of the opposing gang. Yukine impersonates Kazuto to end the fighting, and finally reveals to everyone that did not already know that Kazuto has been dead for some time, and his wish was to end the fighting in the town. At the cemetery, Yukine pays respect to her dead brother and the rival gang joins in. With the rivalry resolved and peace restored, Tomoya witnesses a glow rising into the sky.