--Asshole! Give me back my youth! Give me back the girlish heart I developed by thinking about love! !
——Huh? How to pay it back?
——... Promise yourself?
--……
--Asshole! ! You're out of the plot again!
The story takes place in an orphanage between Xiao Guliang, who dreams of falling in love and becoming a dark devil, and Xiao Saonian, who becomes more and more evil.