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The weakest demon (slime) who longed to be human is reincarnated as a saint, but with the worst character of all, a villainous daughter, from the lowest status of being hated and resented, the slime who will be terminated immediately if her true identity is discovered will become a beloved saint in order to live a safe and secure life!
My Beloved Sister Was a Villain, so I Defy the Scenario God Has Ordained
One day, Ichigotani Nanako receives a sudden confession from Agasa Yuki, the genius prince at school who's also her junior in her club. Surprised by this, the natural airhead Nanako blurts out, "I''ll be in trouble if you die though!" and ends up dating Agasa-kun. Anyway, Agasa-kun has an extraordinary obsession and possessiveness, and he has no mercy for any bugs that come near Nanako!
Please go out with me. If I get dumped, you’ll die." One day, Nanako Ichigoya was suddenly confessed to Yuki Aiju, a junior in club activities and the most talented prince in school. While being surprised by the sudden confession, the natural Nanako said, "I'll be in trouble if I die!" And to go out with Aiju-kun. Anyway, Aiju-kun, who has heavy love, has an abnormal way of attachment and exclusivity, and there is no mercy for bad insects that approach Nanako!! Insensitive natural girl x Yandere boyfriend's lovey doting school love comedy!