Dango Thief (2022)

Shiraga Kazuki wakes one morning to find that he no longer exists. Left with only a mysterious note, he must play a game of hide n seek if he wants to reclaim his existence. With only 7 days to find where the mysterious Thief is hiding and no idea where to start, he is all but doomed until a strange girl shows up to help him. Will Kazuki regain his existence or will he fade away into the Dreamscape?