It's a nice series and I'm glad I gave it a chance. There are different couples with different dynamics and that is probably the strongest point of the series, on top of the fact that the secondary couple got a generous amount of screentime and weren't just put there to show off the sponsorships of the series.
While there are some of the usual clichés that can be found in other BLs, I never felt bored or annoyed at them, which was a pleasant surprise. This was what worried me the most while watching, as I saw countless comments on this page that considered the show boring/annoying because of them. It wasn't the case for me, mostly because of the dynamics among the characters and the pacing that helped keeping everything lively and interesting for me.
Exception made for Earth (whom I already saw in 2Moons2), I didn't know any of the actors here, but I feel like everyone did a good job.
I can't say much else because I don't want to give spoilers. I just want to recommend this series as it was a cute discovery!