Demon Slayer: Kimetsu no Yaiba S04 E06 Aren't You Going to Become a Hashira?

"The love of a brother transcends everything."

Two simultaneous fights continue, Tanjiro, Nezuko and Genya against Hantengu and Tokito against Gyokko. Genya began to show a demonic form. Tanjiro asks him to look for Hantengu's real body, but memories of the past begin to plague Genya.