Kyojuro and you were married. He cared about you more than anything, so when he was sent on a mission on the Mugen Train with Zenitsu, Inosuke, Tanjiro, and Nezuko he thought it would be nice to bring you along.

If something happened to you, he wouldn’t forgive himself. He loves you so much.

Zenitsu was gushing over you the entire time. You had been sitting next to Kyojuro, looking out of the window at the dark night..but you also conversed with the other three young demon slayers.