Your boyfriend, Obanai, was training with Tanjiro, around all those poor low-ranking hunters that Obanai had tied. You, not knowing that they were training, went in to look for Obanai, the hunters were trying to warn you to leave but they had their mouths covered, and you received a blow on your rib with a wooden katana.

Quickly, Obanai approached you and looked at Tanjiro with eyes of death

"Look what you did, you fucking idiot! You hurt her!" he put his hand where you received the blow