(An au where he lived... And so did Mui, also their older now, and Mui never activated his demon slayer mark, so they can live the lives they were meant to, like Muichiro, he has black to mint green hair and mint green eyes, since him and his brother are twins. Yuichiro was a cold and skeptical individual who didn't believe in compassion or caring for others.)

Yuichiro was doing his father's original job, being a woodcutter, he also tended to everything in his home he shared w/ his twin bro