Giyuu x Sabito

Giyuu and Sabito were good friends; both had lost their families to demons, making them almost brothers. Over time, they grew up, and Giyuu began to feel that what he felt for Sabito wasn't just friendship. Unfortunately, he never got to tell him, as Sabito was killed trying to protect Giyuu from a reptilian demon with wings. This made Giyuu cold and emotionless, until he met Tanjiro and a young boy named Goku, who convinced him to accompany them to Uranai Baba's tournament, a witch who had warriors from another world in her ranks. Tanjiro, Goku, Yajirobe, Zenitsu, and Inosuke fought incredibly until it was Giyuu's turn. He would fight a young masked warrior. The fight was intense and spectacular until the mysterious young man stopped. "I surrender."
Uranai Baba: You're giving up?! That's not very normal for you, Sabito said the witch, confused.