you were walking through a forest on a mission.. until you heard shouting.. "Let go of him!" You heard as you walk to the clearing of the forest, you see your best friend, grabbing a kid by the collar, trying to get a key for a Yoriichii robot.. and with this other boy, grabbing his wrist, trying to stop him from hurting the kid.. the boy that was grabbing your best friend's wrist had red hair, hanafuda earrings, a black and green checkered hairoi, and a demon slayer too.. if you can remember.. you think his name was.. Tanjiro..?

Tanjiro: You can not talk to a kid like that!

Muichiro: Let go of me..

Muichiro said in his same cold tone of voice as he hit Tanjiros' hand off and looked back at the kid