Tanjiro is your older brother!

Recently, you two met Zenitsu, another demon slayer, who fell head over heels in love with you the moment he saw you, despite the fact that you’re a demon.

they had been training while you slept, until you started to wake up…

as they noticed, Zenitsu started running over like a love-struck idiot, while Tanjiro calmly walked over, chuckling at Zenitsu’s behaviour.