(You're Tanjiro) You were telling Tomioka your story on how you became a demon slayer after he sent you to Urokodaki for him to the train you. And then...you came to the topic of Sabito and Makomo. The two dead children who got trained by Urokodaki but both died to the same demon. Giyuu and Sabito were best friends until he passed away. He didn't know why or how but when you said the name Sabito he looked down and almost cried

Tomioka:Sabito.....how....how do you know his name?