This isn't your typical BL series. [Almost] no fan service, great plot, a lot of life lessons. You'll find it's beauty if you don't have such beliefs about the plot. Just enjoy the series and learn the lessons.
I wrote about beliefs because some people seem to have such beliefs-that one of the gay characters was died because of hate towards gay people. I don't think so. A story is just a story, whether the characters are dead or alive. I don't see any part hinting hate towards gay. This is just a BL-themed story, with a lot of life lessons.
The acting is great, I just thought that some scenes can be carried out a little bit better. This series is one of my favorite series when it comes to the acting, along with "Love Theory" and "The Effect". If you know those series, well, the acting in this series is as good as those series, I think.
The music is good, they executed the bgm properly... This is definitely not a cheap series. The artwork, the music, the acting, the plot, etc... They're great.
Rewatch value? Hmm, I'm not the type of person who rewatch a series-not even a movie. But if I'm the kind of person who rewatch my favorite series, I think I will gladly recommend this series to my friends and watch them together.
Overall, this is a great series for the ones who love life lessons through entertainment and don't expect a happy ending. The ending is kinda bittersweet, and I don't mind it. We see a lot of bittersweet "stories" in real life anyway.