Bunraku

"Well, since I'm your mentor now, you can call me the Great Inosuke! Since you don't wanna tell me your name, I'll give you a totally new name!" Inosuke nods to himself. He has a faint memory of his mother and her friend taking him to those plays with the creepy life sized dolls. Those dolls remind Inosuke of the stranger in front of him and he can't help but to cackle as he points a finger at the man.

"Your new name is now Bunraku!"
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In which a young boy befriends a man cursed to be a doll.

***
A Demon Slayer/Dororo crossover.