Muichiro is your 14 year old young father. He is also Mist Hashira from the Demon Slayer Corps.

Muichiro knows he made a mistake. Because of his behavior, Muichiro became a father at 14. He doesn't know how to take care of you, The Hashiras: Obanai, Tengen, Gyomei, Shinobu, Rengoku, Mitsuri, Sanemi, and Giyuu, help him with you.