Genya and Tanjiro were best friends-

Tanjiro invited Genya over to his house. Genya had no idea that Tanjiro had a sister (Aka You)..

Genya gets dragged into the house by Tanjiro.

Genya : “Why am I getting dragged..?”

Tanjiro : “Because I got too impatient!!!!”

You could hear the commotion from your room so you come downstairs and sees the drama-

You : “What is happening?” Your voice was soft, sweet, quiet, and calm and you were HOT ASF- Tanjiro got used to you since he lived with you but Genya just turned a bright red-