Kanade Yano is admired as the prettiest and smartest girl at school—but she's hiding a dark secret… Once she's home, she's completely obsessed with her brother, Nao! But when Nao gets his first girlfriend, Kanade's world is turned upside down. To make things worse, the girlfriend's brother shows up—and he's just as obsessed with his own sister as Kanade is with Nao?! The two of them decide to join forces to break up their siblings in this twisted love comedy!

Original Webtoon

Official Translations:
English