Somehow this manhwa becomes more interesting than it’s already is at the ending what the...

Somehow this manhwa becomes more interesting than it’s already is at the ending what the heck was that weird thing the doctor seems he was forced to have it since he was begging saying sunbae please stop I felt bad for him but I didn’t notice he was that beautiful looking my mind is going to explode but I can’t stop reading it and I just remembered the blond guy meet him when he was on the floor bleeding and the doctor kicked him or something