Haruka enters Akira's room and stops her from burning something, which is her mother's missing journal, where it is written that Kazuha and Akira has a chance of mistaken identity. With the journal, he suggests to Yahiro and Kazuha a DNA test to prove things once and for all. Yahiro refuses, but, despite disapproval from her mother, Kazuha agrees. Haruka informs Akira at the shrine the next day that the DNA results will be out in five days, but Akira disappears on the fifth day. Haruka finds her at the train station, where they talk until the evening. When the DNA results arrive that night, Kazuha and Sora delivers it to Akira, who is still at the station, but she buckled, too scared to read it. It is then that Kazuha's mother appears, and tells everything at their home, where Akira is shown the lost pendant, returned to her by someone who found it at the mountains, basing on the name engraved on its back. She reveals that she and Akira's mother had shared the same hospital room, and, one day Akira pulled the pendant off of her neck as Mrs. Migiwa held her in her arms. After hearing that Akira's mother had passed away, she gave the pendant to her to make her feel, at least, the presence of a mother. Akira then reads the DNA results, and it read negative, which means Akira is born of a different mother. There, Kazuha's mother let her keep the pendant, and apologizes to Akira. She later confesses her love for Haruka and vice-versa.
夏祭り当日、舞台で舞う瑛の目から涙が零れ落ちるのを見た悠は、社務所に駆け付ける。そこには悠の祖母の『瑛ちゃんと一葉ちゃんは取り違えられた可能性』という一文が書かれた日誌を燃やそうとしている瑛の姿があった。
翌日、悠は学校で瑛から別れを切り出された。大切な人を次々と失ってしまった瑛は、悠もいつか自分のもとから離れてしまうのではないかと考えていたのだ。しかし「永遠になくならないものはあるよ！」という悠は、一葉にすべてを打ち明けてDNA鑑定を申し入れる。そして一葉もそれを了承するのだった。
悠からDNA鑑定を行なうと告げられた瑛は、一葉や悠とともに、鑑定結果を聞く約束をする。だが結果が出る当日、瑛は町から逃げ出そうとしていた。しかし、悠の説得も有り、皆の元に戻った瑛。意外にも彼女の前に現れたのは、一葉の母親であった…。
悠的祖母的某本日志被瑛藏了起来，上面写着当初她跟一叶很可能被抱错的经过。悠虽然主张就算要验DNA也要查清楚，但八寻与瑛却表示反对。因为瑛很害怕自己喜欢的人又会再离开自己的身边……
Wurden Akira und Kazuha im Geburtshaus kurz nach der Geburt vertauscht? Ist Kazuhas Mutter die Mutter von Akira? Um Klarheit darüber zu bekommen, schlägt Haruka einen DNA Test vor. Aber Akira fürchtet die Wahrheit.
