Looking for manhwa title

I forgot the title and I've searched in my reading history but I can't find it, so seme's hair is blonde and uke's hair is black as I remember, seme is so good looking and i guess he's yandere, at the beginning of the story uke is almost raped then the seme saves the uke by killing the rapist with a hammer or something, then the seme takes the uke to a hotel I think and then they have sex there, then it turns out that the seme works in the same company as the uke, but the seme is just a cleaning staff or something while the uke has a higher position, maybe a manager or the head manager? then uke wanted to take leave or change jobs, when the seme found out, the seme immediately kidnapped uke to his house, put uke in the basement, at the end Uke feels like he's starting to like Seme, then one day Seme gets sick and Uke can run away, but Uke chooses to stay and not run away