Sora decides to follow everyone at the beach, but at the moment she got off the bus, news that a young man was rescued from drowning unconscious. As Sora looks over, she finds out that the boy in question is Haruka. However, Nao acted quickly and performed mouth-to-mouth resuscitation. With that event, Sora becomes even more insecure, eventually telling Haruka not to leave home and tells all sorts of excuses just to make him stay. One day, Sora made Haruka choose between her and Nao, but he just shrugs it off and proceeds to school with Nao as if nothing is wrong. That afternoon Haruka finds Sora missing after receiving a text from her saying "they'd leave the place." Akira, Kazuha, and Ryouhei joins Nao and Haruka in search of her, until, amidst the rain, Nao finds Sora at the bus stop. Refusing to go with Nao, Sora runs out of the bus stop, angrily telling her that she is the reason why Haruka has changed. Suddenly, a bolt of lightning strikes the bus stop and burst into flames. Sora then remembers she forgot her stuffed bunny inside. Nao rushes in to retrieve the only memento Sora has of her mother, causing her to be nearly trapped inside. After receiving the rescued item, Sora reveals to Nao her insecurities with her, that she is afraid Haruka would leave her alone. The next night, Sora joins everyone during the Summer Festival at the shrine. This time, Sora is more receptive of Nao.
一人自宅に残ったものの、気になって海水浴場に出かけた穹は、溺れた悠に人工呼吸する奈緒の姿を見てしまう。このまま自分は捨てられると考えた穹は、家を出ることを企てる。
「ここから出よう ハル」というメールを穹から受けた悠は、懸命に穹の姿を探す。一方、穹は母との思い出が詰まった黒ウサギのぬいぐるみを持って、バスの停留所で悠が来るのを待っていた。だが、雷雨の中現れたのは奈緒だった。
優しく手を差し伸べる奈緒に、涙ながらに「悠を取らないで」と叫ぶ穹。そのとき、停留所に雷が直撃。穹の大切な黒ウサギが炎に包まれる。そんな穹の大切な黒ウサギを命がけで助け出したのは、奈緒だったのだ。
跟大家一起去海边玩的悠不小心溺水，最後被奈绪救上岸。但是在这起事件之后，穹的样子开始变得很奇怪，最后甚至要求悠决定选择奈绪还是自己，悠也因此对穹摆出冷落的态度。结果穹选择在悠等人面前消失，悠也因此感到极度的后悔。
Auf dem jährlichen Sommertrip zum Strand rettet Nao Haruka nach einem Badeunfall mit einer Mund-zu-Mund- Beatmung. Sora ist danach verschwunden. Nao findet sie in der Bushaltestelle. Plötzlich schlägt ein Blitz ein.
