This Is Not the Female Devil in My Impression

"The world's most powerful female devil who killed people without blinking an eye in the game in her previous life has become my junior sister in this life?" "And I treat you as my junior sister but you want to have sex with me? It's a good idea, I like it." Although Liang Yi still couldn't figure out the situation, in order to prevent himself from being dismissed as a villain BOSS by the majority of players, he resolutely started the "Junior Sister Development Plan".