Hmmmm it's been a long time since I read this Who is ian again????

the blonde haired guy who was with mc before

Ian is the blonde dude with blue/grey eyes who seems fragile, the one that was abused by the director in Ian and our hamster's old idol company, and who our Do Seohee was super worried would get labeled as "the victim" by media when the asshole grey-haired dude tried to dig up dirt on our hamster.