第1話: 少女たちの罰ゲーム論議後、圭一と貴志がひぐらし症候群に感染

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Keiichi, Tomitake, Irie, and Oishi speculate over punishment games for the girls in Hinamizawa after Keiichi's recent string of losses in the games. Keiichi eventually falls asleep, waking up to the girls speculating punishment games for him. He blacks out again, waking up in the clinic, infected with the 'true' Hinamizawa syndrome, along with Takano. The girls try to 'save' him, almost ending up killing him after killing Takano. Keiichi blacks out again, waking up to the same situation as before, as Tomitake, Irie, and Oishi infect him with the true Hinamizawa syndrome again in a parody of the original series. (Source: Wikipedia)