This is a very meh manga overall. I started reading it because I'm a BL fan and enjoy stories about bands, but it's nothing special.
The main problem is that the main couple has no chemistry. Zero. The love story isn't very convincing and well, it's a BL, so that's a huge flaw. Uenoyama, the main character, is a good character, but his love interest, Mafuyu, is incredible bland and boring and a very generic character. You have seen that same archetype dozens of times.
On the other hand Haruki and Kaji, the secondary couple, were charming and fun characters and had an interesting relationship and struggles, I actually enjoyed their scenes, buuuuut then it went into a non con direction giving me a very sour taste. It's a shame. It gets better, but it's hard to ignore some of their previous problematic scenes.
The art and character designs are pretty generic too. It's not like it's bad, far from it, but it's very soulless. I have seen dozens of BL manga with this same art style. If you don't mind generic art styles, then it's good. But I like art to have a little more punch and meaning to it.
That being said, the scenes revolving around the band and music are good and compelling. But when the best thing about a BL manga is the band plot, something is failing for sure. It's aan okay read but there are better things to read.