I came to Sister's world, but she didn't remember me...
My sister fell in love with someone and gave up everything for that person. I want to "snatch" her back. But there is always a "villain" who targets me everywhere, for his so-called sister-in-law...
The entanglement and duel between two "madmen", the male protagonist is really crazy, and the female protagonist is crazy just by chance.
Intention: I love her, he loves her