
i am not sure but maybe his type doesn't require him to enlist, maybe he just need to do some social works and stuffs. either that or the author think it is not important to the story so he/she never state that in the manhwa. or if he does need to be enlisted, it will be in a later time because the ages needed for korean men to be enlisted is from 18 to 28. he has all the time to enlist after he completes his studies.
(as to why dowan enlist so early is probably because he wants to get it over with faster so it wouldn't affect his future plans or something, same with chamin but unfortunately he didn't get accepted) - all these are just my assumptions if i am wrong then sorry for the wrong informations
OKAY BUT DOWAN IN MILITARY UNIFORM???? HOT DAMN
also can someone explain this whole military thing? like why does chamin fail? isn't it compulsory for all men?