This drama started off really really well. From highschool to the time they have their own careers

Liked the highschool phase more than the university one. That made me cry, laugh and feel nostalgia.

College part was a bit draggy. I wish they introduced them their working part a bit earlier than in the last two episodes.

XY had crush or liked CL for a very long long time from school to even just like before graduating.. the story kept going in circles like she wants to confess but won't coz he isn't brave enough. Then once ML realises his feelings for FL, he keeps delaying his proposal (well it's understandable since they all are good/ best friends). Wished they ended FL liking SL a bit earlier and develop something between two leads.
ML always teased and be mean to FL in high school but he starts behaving better towards her once he realises his feelings for her.

Character growth in this drama are for only two roles SY( a little less) and LT (from being always with her bf she ended her relationship in a mature way)
Liked all the characters. Grown attached to them but wishes they just planned it well.

Writers should have planned the story well.

Overall, it's a nice story except they added some cliché parts like fake dating and stuff. And parts feel realistic like you won't always end up whom you want with. There are few lines which will make you understand the life, in the drama.