They didn't recognize each other before because they never saw each other's face. Seriously, look back through all the previous chapters where they were both at college and in the same room; at no point did either of them have an unobstructed line of sight to the other's face. There's even one time when Urumin briefly mistook another guy for Kimiya, who ironically was further away from her in the opposite direction and thus she couldn't hear him talking to his friend.Omg for the love of all that's goodness, PLEASE tell me they're gonna finally recognize each other when she's not in idol mode 😭
It's been dragging on for too long atp