Imagine a girl who doesn't think twice before throwing a punch. Kuina, once a fragile child, is now a muscular warrior with steel fists, living for one purpose: to get revenge on her father who ruined her life. But instead of getting her revenge, she finds herself in a crazy world with a 'System' that forces her to level up. And how does she level up? Not only through brutal battles, but through... love with girls. Yep, you heard that right. She builds a harem of girls, each one more insane than the next. There's a seductive witch, an angry fire queen, a hoarse sorceress, and even girls who seem innocent but have brilliant minds that can paralyze enemies. The question is whether Kuina will use her power to destroy the world, or if her heart will fill up enough to heal the hate that burns inside her. Come see how she wins battles, confronts Naamo and his parents, and discovers that love can be the strongest weapon of all.