This is the purest Enemies to Friends to Lovers arc I've seen in a drama. The fact that both leads have ride-or-die friends at uni indicates early that neither is fundamentally toxic. They're just young and newly moved away from home and figuring themselves out. But then, as they stop looking at each other through the lens of their families, they absolutely bloom under the other's regard. By the time they are head over heels... I can't think of another first kiss on this level. They kiss like it's a confession. No words, just a tidal wave of emotion and complete openness between them. Every acting choice tells a story on multiple levels, down to the final episode. A must see.