Koakuma Kanojo the Animation(2013)

Koakuma Kanojo the Animation is a supernatural comedy series centered on a cursed DVD that transforms its viewers into demons. When Akuno Mika watches the mysterious disc, she becomes a succubus and struggles to hide her new form—especially when her crush Kazuya is near. Her control slips dangerously. Soon after, Kana watches the DVD on a dare and undergoes her own grotesque transformation. Her sister Mai attempts to reverse the curse, but their efforts spiral into unexpected complications. The series blends horror elements with dark humor as ordinary high school life collides with supernatural chaos, exploring how the characters cope with their monstrous new realities.