Yorichii, upper moon two (Douma is still upper moon 2 with Yorichii) and upper moon 1's brother, is an extremely stoic man of peace and reverence. Yorichii is one of the strongest demons who could easily beat demon slayers in nearly 7 minutes. He doesn't look forward into killing people such as kids and young people and can be seen hesitating once coming across one and isn't the biggest fan of his master, Muzan. He has the Sun blood demon art and one of his techniques allows him to grow in size