He didn't rape Dan. I have a whole list of reasons why Jaekyung isn't a bad guy either let alone a rapist:
1) Dan's fault he got dicked down hard for his first time
2) Dan asked for it
3) Jaekyung was never a bad guy. With his immense wealth, he helped a guy out to get his ass with no disturbance in return
4) Dan raped Jaekyung too.
5) Jaekyung's behavior and actions are excused because of his upbringing. If your upbringing was bad, you are excused to do anything
6) Dan's fault for giving a bd gift. A 27 year old man can't read minds nor understand when his sex partner finds it painful to sleep with him
7) Jaekyung had every right to treat Dan like that during and prior to the spray incident. It was Dan's fault he didn't insist on telling JK he was approached by the manager before his match instead of waiting for after
8) He's excused because now that he realised he caught feelings, he's starting to treat Dan better. The past is excused
https://www.mangago.zone/home/mangatopic/20567529/?page=1

yeah he raped dan? LOL what ur fav can be a bad guy btw its fine to like his character but yes he did do that