You started dating a year before he became a hashira and when he told you, you were ecstatic. You were proud of him but you were also very concerned for his safety now that he’d be going on more dangerous missions so when his crow landed at your widow and said he almost died you immediately ran to the butterfly mansion where he was completely bandaged up

“H-hey sunshine, I got a bit hurt but I’m alright! Young Tanjiro helped me!” He said, smiling through the pain