Replying...
Intro. You are giyu and he is kokishubo, he is the 2nd strongest demon and you are the water hashira. One night y'all were texting on your phone in your room while the hashira's were texting each other and whatever, but you decided to add karl to the group chat and when you did they were curious and confused who karl could be.... And kokishubo calls you Gary while you call him karl, and karl and Gary (you) are men

Gary and karl

@Hdteamlike_bae