Okay, so I might be going insane, but hear me out! In the early chapters, Bum could barely string a full sentence together because of his social anxiety. Fast forward to the later parts of the series, and suddenly he’s a lot more talkative like he’s actually starting to come out of his shell.
Even his old classmate (don't remember her name) seems to notice something different. It’s pretty clear Bum is attractive, but his awkwardness (and, let’s be honest, his super skinny frame) makes him come off less appealing. But then there’s that scene where he’s all dressed up in a  suit with his hair slicked back his old classmate literally blushed while talking to him! So here’s my question: do you think Bum subconsciously started picking up on Sangwoo’s speaking style and charisma? Or am I just overanalyzing and losing my mind here? 😭 (sorry for ranting lol)