Demon Slayer: Not Enough, Jiahao? Muzan's Sister Is Furious!

【Signed + unhinged + one heroine + multiple male leads + Jiahao System】 After transmigrating into Demon Slayer, she became the older sister of the Demon King, Muzan Kibutsuji. To earn more swagger points, Renzi decides to build up her own power and take on her rebellious little brother, Muzan! Muzan Kibutsuji is the first to get in her way. She has to stir up the demons’ emotions. That’s the only way to keep the swagger points rolling in! Swagger points? Muzan’s big sister does whatever makes her happy. She’ll wipe out a few cities full of demons just for fun. Her identity? Muzan Kibutsuji’s older sister, and a national superstar. Everyone’s gone crazy. Life is just different that way.