Blade x y/n

A Blade x y/n book ( hsr ). As I do not know everything about honkai star rail and Blade's backstory, I will just try to come up with an imaginary story.
Kafka will surely be in it too as they are hunters and also partners.

A long time ago Kafka and Blade met each other and decided to work together and be hunters. They slowly became good friends and they got along.

Blade gained some feelings for Kafka and decided not to talk to her that much, he shut his feelings down as he wasn't interested in relationships especially with someone like Kafka.

But, soon Kafka had realised she has some feelings for Blade.

Everything changed after Y/n appeared out of nowhere

What will happen?

None of the characters belong to me.

English is also not my first language so beware of grammatical mistakes:).