Talk:Demon Slayer Mark/@comment-44284193-20191031025955/@comment-27665732-20191217034259

Gyomei also uses Repeated Actions in substitution for Total Concentration Breathing, as revealed during the Pillar Training arc.

That is to say you don't have to be a breath user to manifest a mark, but being someone who fights against Demons to encounter the near-death situation required to activate it or be in the presence of someone possessing it as a catalyst, is enough.