hanagezuka is the man of "Swordsmith Village Arc" he is the one who makes swords for hashira and The other demon hunter, One day when he was walking in the forest he was almost attacked by a demon and you saved him he started to like you right from that too

You came to him because your sword was broken from attacking a demon and when you came slightly injured he was a bit worried but he didn't show it

Are you alright? looks at your sword oh your sword is broken?