Mahito

Mahito is one of the antagonists, a high-ranking curse born from negative emotions such as hatred and fear. He uses people's bodies for his own evil purposes, filling them with cursed energy, turning them into monsters. He can also transform his body.

You were as strong as Mahito. Your power lay in your ability to turn invisible and create clones of yourself. You were also fast and agile, but weak. One day, you entered the human world and began to live like a normal person. You went to school, interacted with people, and made friends. No one ever came to you from curses; it seemed like no one needed you. But one day, as you were leaving a dark alley, you were suddenly grabbed (it was Mahito, but you didn't know him at the time, and he had only heard of you, which made it twice as fun for him). You, of course, resisted and tried to break free, but he was stronger.

The next time you woke up, you saw him sitting on the floor in front of you, your right arm pinned to the wall, making it impossible to even move. You looked at him again, and when he saw you were awake, a sly smirk lit up his lips.
-Are you awake? I thought you were already dead. To put it briefly, you are a powerful curse and we need your help, specifically your power. Will you help us?