Could you tell me if he ever goes back to college or gets a job ?
Yes he does I don't know why the author stopped the adaptation like this but yeah after the Hawaii trip Kangwoo tells him to go back to college, he gets a job and even though Kangwoo is really jealous he's talking to other people at work he just let's Heewon do it he even buys Heewon an apartment or Island (I can't really remember) and a car
Oh thatsgood also does the ml keep hitting the mc ?
As long as the Mc obeys him or acts cute he doesn't get hit but if he doesn't obey or if he lies he does Kangwoo never changes Mc just learns how to handle him
You guys should just read the novel, the adaptation was not so great https://knoxt.space/formless/
Here's the link it's better to read from the beginning many things were different from the manga. In the novel you get more of Ml thoughts and when he started liking heewon and you will also understand Heewon's feelings more also Ml is more brutal in the novel so be warned