Talk:Sumihiko Kamado/@comment-24053170-20200519202830/@comment-40238811-20200519204034

Because his name contains the Kanji "炭" like Sumiyoshi. Tanjiro and his dad's name have the same Kanji too but different Kanji combinations have different reading. That is why Tanjiro's name when disguised as a girl is "Sumiko".