Als Komaris normalerweise fröhliches Lächeln anfängt, traurig und einsam auszusehen, beschließt Riki, sie aufzumuntern, indem er nach ihrem Bruder sucht... aber gibt es ihn wirklich? Ab nächsten Tag statten die beiden Komaris Heimatstadt einen Besch ab, wo sie hoffen, ihre verlorenen Erinnerungen zurückzuerlangen.
Komari continues to dream about her brother, and Riki goes to see Kojirō to learn more about Takuya. Kojirō merely tells him that he should not pry further into the matter if he cares about Komari. Unable to sleep, Riki goes out to buy a drink and encounters Komari at the school gate, who had gone out to buy snacks. She invites him up to the roof to watch a meteor shower, where the spend the rest of the night. Komari asks Riki to go on a date with her so she can search for her lost memories. They take a train to go to where Komari used to live and they end up taking a boat out on a lake. Riki suggests to her that she does not necessarily have to look for her brother, and Komari jokingly asks him if he will be her brother. It starts raining on their way back towards school, and while running to find shelter, Riki spots a dead kitten. Komari starts sobbing uncontrollably as she recalls memories of her brother.
野球の練習中は鈴たちとじゃれあって楽しく過ごす小毬だったが、夢の中の兄のことを思うとせつない笑顔を浮かべる。
理樹はそんな小毬のために兄を探すことを決意する。小毬の兄は本当にいるのだろうか。それとも……？
その夜、小毬は流星群を見ようと理樹を屋上へ誘う。お菓子を食べながら、星に願いをかけるふたり。
夜が明ける頃、最後の流れ星を見た小毬はふと何かを思い出す。そして週末、理樹と小毬はふたりきりで郊外へ行く。
彼女のなくしもの、小毬の思い出を探しに……。
꿈 속에만 등장하는 코마리의 오빠의 존재를 묻기 위해 다시금 요양원을 찾는 리키.
코지로 할아버지로부터 듣게 되는 코마리 오빠의 진실이란...?
그날 밤, 그 진실을 알고 밤잠을 설치던 리키는 교문을 통해 무단침입하려는 코마리를 발견하게 된다.
虽然和铃她们玩棒球很开心，但一旦说起梦中的哥哥，小毬就会露出悲伤的微笑。理树下决心为小毬寻找这个哥哥。小毬的哥哥真的存在吗，还是……？晚上，小毬邀请理树在房顶上看流星雨。小毬对着星星许下了愿望。周末，理树和小毬2人去郊外，为寻找她失去的东西，小毬的记忆……
