4. Bölüm: Nao, Shūsuke'u sahile zorlar; burada Haruka, Hirono ve Iroha ile karşılaşır ve bu durum, Shūsuke'e fiziksel zarar veren bir rekabete yol açar.

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Nao coerces Shūsuke into going to the beach with her, though coincidentally they end up running into Haruka, Hirono and Iroha, who Nao recognizes as the pigtailed girl from Shūsuke's childhood photos. Nao and Iroha end up competing with each other for Shūsuke's attention, though it tends to just bring him pain. Nao accidentally knocks him unconscious with a rented boat, and he dreams of his favorite eroge character. Nao and Iroha compete with each other over who gets to perform mouth to mouth resuscitation, though in the end, he is revived by one of his male friends. (Source: Wikipedia)