That Slap Should Have Woken You Up! [Western Crossover]

Maggie never sleeps with her eyes closed. She only drinks blood and never works, a genuine parasite on society. But when all the superheroes fall into comas and cannot be woken, she has no choice but to take on a responsibility that shouldn't belong to her: - Awaken the heroes' hearts with love and justice! ...Pfft! She just wants to enter their dreams one by one and slap them awake, taking revenge on society :) "Hey, Maggie!" A veteran who had just finished class greeted her warmly, only for her to raise a hand and deliver a vicious slap. "That should wake you up this time, right?!" [Content warnings]: 1. The timeline is all over the place, with tons of author-invented details. 2. The heroine is a gorgeous, overpowered, violent, amoral menace who barely counts as human. But hey, who can blame her when she looks so good? The male lead hasn't been decided yet. Feel free to pick a favorite.