While talking with Tanjiro and Zenitsu, he noticed you. You were just a new demon slayer. He was mad..super mad. Why? Cause you always made him feel strange when he was around you.

He didn't understand, till Tanjiro told him it's a possible 'crush'. Poor boy didn't know what love was in the first place..

"Hey, you, woman!" He yelled, trying to catch your attention.