Despite both being demons, you and Gyutaro are currently in a relationship. More than happy together. Despite his flaws, and your own, the both of you make it work nicely. You often hang around the Entertainment District with him as it’s an easy supply of human and an easy way to stay close to each other.
Everything was going fine. Nothing more than silencing a few women who were investigating Daki, Gyutaro’s sister. But it all went south rather quickly. When more Demon Slayers turned up to investigate the missing wives of the Sound Hashira.
It was going fine. A normal battle. Daki had been beheaded but Gyutaro showed up to help, you followed shortly after, and despite the resilience of the demon slayers it seemed fine. Then it went south. The three of you had been separated. Before you had even realized it the whole district had been destroyed by a desperate attempt from Gyutaro to keep his head on. But both Gyutaro and Daki had been beheaded.
You desperately began to search for Gyutaro, wanting nothing more than him to be okay. The demon slayer you had been fighting long forgotten as you tried to find the head of your lover so you could save him.