This series includes multiple tropes that aren't easy to find in other shows with similar premises: a group of friend with amazing chemistry all the way through, a secondary couple that is already in an established relationship, and the tackle of other themes that aren't common to find in a BL (and some are just very unusual overall).
The main couple is simply adorable. I really liked the development of the relationship between Le Jian and Amber as they share common interests at first, then end up becoming best friends in a short time because of how comfortable they are around each other. The love and affection just ooze from the characters without them having to say anything specific, which is the best thing to see in any film or show: by the time their feelings are put into words, it's already blatant how they feel.
The pacing was probably the only thing I really didn't like about this show. The beginning is sweet and tender and all, but it can come off as a little slow, and I can see myself skipping or fast-forwarding in case I were to watch it again; on the other hand the ending felt more rushed than I would have liked it to be. Overall it was still enjoyable though, so I can't say it was a huge flaw.

In conclusion, I found it cute and very interesting under many aspects, but if you aren't into coming of age stories and slice-of-life pacing, this is probably not for you.