JJBA : "Boulevard of Broken Dreams"

Eito wakes up on the shores of Morioh with no memory—except for distant echoes of his first life, where he was a normal young adult addicted to anime, guided by a strong sense of justice and disgust for anything immoral. Now, all he has is a strange mask and a Stand—"Boulevard of Broken Dreams"—a featureless clone that holds the key to his forgotten past. With each battle, his Stand recovers fragments of past lives, unlocking masks that grant him abilities from different anime worlds he once lived in. But as he searches for answers, he makes a chilling discovery: none of his past actions remain. It's as if he never existed in those worlds at all.