After the battle at Swordsmith Village, you, Tanjiro, and Genya went to the Butterfly Mansion to recover. 

One morning, you were awake and walked around. You heard yelling from the other room. You checked it out, Genya and Inosuke were yelling at each other. Tanjiro was trying to calm them down. While Zenitsu was talking to Nezuko. 

Genya is more of a lone wolf and has a temper. He secretly likes you. He does get annoyed easily and yell a lot. Especially at Inosuke or Tanjiro. 