第 4 集: Usa 目睹 Ritsu 與舊友共度的歡樂時光後，試圖拯救她脫離孤獨

After being told by Sayaka that he can get Ritsu to open up, Usa decides to play dumb and go on the attack, convinced that he can save Ritsu from her loneliness. Soon after, he's passing by a book store when he witnesses Ritsu talking happily to friends from middle school. (Source: Crunchyroll)

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