Recommendations

The school aspect is similar and the general atmosphere of both dramas as well. Multiple leads in both dramas.

Both dramas are short and tackle the societal denial of what it is to be in a same-sex relationship sensibly and realistically. I love that they both did not exaggerate the idea with campy tropes. Very unlike most BLs. In fact, BL is a hard genre to put these in when they're fully just lovely stories about queer life in spaces that make queerness a non-option.

Both dramas explore the time-traveling concept, have romance and crime. They have the same vibe. Both are quite dark, but have funny and cute moments as well. Both very touching.

Both are very heartwarming, cozy and healing. There are the backstories to both of the main characters and how they are trying to find their happiness

They're group of childhood friend and there's some case of love between them. One of them died at young age and that makes the group separated into their own ways. 7 years later teir died friends come back and her come back reunited the group.

Both shows have similar premise - three people whose unfortunate fate is so entangled that it continues to their next life.

Both dramas are cute and lighthearted.
ML and FL live in the same building.
FL working hard for her dream.

Both leads are very similar when it comes to their character and both dramas are in general having a lot of similarities as well. Both deal about leads that suffered a devastating loss in their childhood, and both got shaped because of that. Both became police officers due to that and both are faced with a crime that hits very close to home.

Both are classics must watch to me.
The leads meet casually and become "partners in crime". Both MLs are in love with someone else at the beggining but, when they eventually fall in love with the FL, they can't easily get a happy ending because in My girl they have to fake they're cousins and in My princess they're apparently enemies.
Very interesting plots, with many moments that make you laugh and others that make you cry!

Same writer, similar plots. Both have something to do with secrets. They're both quite dark but with a happy ending. The acting is amazing, all the actors in these dramas made a great job and the stories are impressive and unpredictable. I bingewatched both ^_^

If you are after a Soredemo Ikite Yuku style movie with tense situations and masterful acting that will haunt you long after the credits roll, Harmonium is the movie for you. Must watch.

The plot is nowhere near similar but both explores the pain of loss, of deep yearning, and finally, healing and acceptance. It also has the same atmospheric feel, like you were dreaming all along.

one more love story in asian drama going to unveil can a royalty and commoner become as one by defeating all obstacles their life

Another great movie about friendship, girls' music band and girl power!
Last not least, in both some works from Blue Hearts are performed

These two dramas have similar story lines. Both of these have female leads that time travel from modern day to ancient times and turn into cats. Both have to find a stone/jade before going back or break the spell.