Title?

I didn’t read the whole manhwa and just started in the middle. But it was a full colour webtoon, and the uke had white(?) hair, and the seme had black hair. They were in a contractual relationship because the ukes brother was trying to kill him or something and the seme didn’t want to get married as his grandfather was trying to get him to. They recently broke up and the uke got into a car accident.