Tomoya and Nagisa invite Fuko's older sister Kouko to the Founder's Festival. In the meantime, Fuko hands out more carved starfish to students at the festival, and her fan club helps spread the word about Kouko's wedding too. Nagisa and Tomoya meet Tomoyo, who is wearing a bear suit to find people who are causing trouble, and manages to knock Youhei out a window for bothering a girl. When Kouko finally comes, she cannot see or hear her sister.

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.

During the time that Tomoya is suspended from school, Tomoyo continues to come to his house, wake him up, and make him breakfast, though when she tries to ask him about his relationship with his father, he does not answer her. On Sunday when Tomoyo is making him lunch, Kyou, Ryou, and Kotomi arrive each bringing a bunch of food, and even Fuko appears with food; Tomoya ends up eating everything. Once back at school, he finds out how Tomoyo's reputation is dropping due to rumors of her as a gang leader, and arranges for Tomoyo to compete against several school sports clubs to boost her reputation. After school, Tomoyo tells Tomoya about her family situation and how her brother risked his life to keep their parents from divorcing. Nagisa finally comes back to school and is welcomed by her friends. During a tennis match between Tomoyo and a male tennis club member, a stray ball hits Nagisa on the leg, and Tomoya overprotects her, showing everyone how devoted he is to her.