Cattopinku

In a world ravaged by mana portals and monstrous invasions, ordinary office worker Andrey Thompson never dreamed of becoming a hero until a deadly goblin attack nearly kills him and awakens an absurd system. Now bound to recruit and empower adorable Magical Girls, Andrey must guide them through escalating battles, private training sessions, and increasingly intimate “reward” rituals that blur the line between power-ups and forbidden desire.

He died with nothing. He woke up as a jellyfish. Now the ocean's weakest creature has to grind his way to the top, one pathetic sting at a time.