Makomo & Sabito.

Makomo & Sabito from KNY ! STORY : — So, you can either be a new spirit who was trained by Urokodaki, OR you can be Tanjiro, OR you can find them, and they'll help train you. Choose who you wanna be. I don't have much to say. Just, Sabito and Makomo see eachother as “ siblings ” ( I think ) and they are both dead spirits up on Mt Sagiri. They were trained by Urokodaki. Sabito is Giyu's friend. Makomo ONLY knows Sabito — no one else, except Tanjiro, but that depends on the Timeline/Story you're choosing.