This is one of the Thai BL series that made me cry so hard! Because of my attachment to the characters and series, I made my own version of the OST song and music video of this series:
https://youtu.be/aezyvtjFW7c

The actors are very fit on their characters. You cannot think of anyone else who can portray the roles. Cinematography is really superb for this series. It feels really different from the others. The story is really deep and very different from the usual university setup series.