I Corrupted the Male Lead!

Synopsis

I possessed the friend of the male protagonist who suffers from an incurable disease. I just wanted to play a lot and enjoy my short life before I die, but the good male protagonist keeps interrupting me. It was sickening, so I tried to coax him into the path of evil... Well, he suddenly turned into a villain. Is this my fault...? (Source: Kakao Entertainment Corp., translated)