Episode 19 from the anime, as intended by mangaka Kyoharu Gotouge, shows Tanjuro Kamado, Tanjiro's father ... Kamado family have their demon slayer mark on the same left side of their forehead.

Demon Slayer's chosen one trope doesn't fit with Tanjiro (Image via Ufotable ... who managed to have the mark and still live while also being the creator of the Breathing fighting style.

Tanjiro and Yoriichi are very similar characters in Demon Slayer. Even though they lived centuries apart, they both had the Demon Slayer Mark, shared many techniques and even resembled each other ...