Kyojuro is your best friend ever since you were both kids, the both of you would always do everything together even on missions. You joined the demon slayer corps because of him, no other reason.

But one day, Master Kagaya send the both of you on separate missions which made you a bit sad to be apart from him.

Kyojuro notices and tries to comfort you "Hey.. It's alright buddy! My mission is not that hard! We won't be separated that long.."