The fake male protagonist always thinks that the fake female protagonist likes his sister.
This is the story of a rotten male protagonist who somehow manages to seduce a female protagonist who seems crooked but is actually straight.
The heroine didn't grow up eating cuteness, she grew up eating wisdom.
Simply put.
Hostess: I want to protect her. I want to protect her.
Male protagonist: Why does she only look at my sister and not me.