Ep. 1: Mayumi Hashimoto sends classmate Yoshimi Kuroda to hell after enduring severe bullying and blackmail.

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Junior high student Mayumi Hashimoto suffers intense bullying from classmate Yoshimi Kuroda, who frames her for embezzling class funds, coerces her into immoral acts, and blackmails her with photographs. Desperate and at her wit's end, Mayumi discovers a website capable of sending targets to hell. She learns the cost is her own soul. Despite hesitation, her situation deteriorates further. In desperation, she uses the site to send Yoshimi to hell. Although her life becomes peaceful without her enemy, Mayumi must live with the knowledge that she is bound for hell, marked by a sign on her chest.