This drama starts off pretty weird; the leads are both in love with their teachers.
The story revolves around Unrequited love, and a very immature bond forms between leads in order to fill the void. Their relationship progresses, but never matures. It's merely a friends-with-benefits relationship.
A very toxic Second lead forms. The respective teachers that the leads are in love with start a relationship as well, which oddly turns into marriage.
The story has no depth, is cringe-worthy, and gets silly as it goes. There are minor relationships too.
The FL with a fellow classmate who actually loves her and is willing to sacrifice herself just to see the FL happy. Their relationship remained platonic in the end. The ML, on the other hand, slept with a girl from his past, while he was in a contractual relationship with the FL.
It's full of sex scenes, but not the explicit type. The drama happens in a few limited locations and we don't get to see so much outside.
There is romance but very superficial and without depth. The leads eventually fall in love but decide not to get back together and go on living their lives. More like an open ending.

Overall, a very average drama.