This is my first review, and it's my opinion about this manga so not hate, peace.
Anyways, lets start with the basics.
The premise of the manga is solid, the art is beautiful as well, and there is no unreasonable or too forced of a development unexpected of a ecchi manga.
My problem with this one is that it focuses too much in the cosplay aspect, as I told you it's my perspective. The cosplay parts are too long and there is little to none ecchi aspect mixed in it, which means it is not for me.
As for the other things that I didn't like was that the MC was serious yet not so serious about other girl's feelings about him, which feels half-baked, I don't know if there was further development after this, so don't reply that he does later on.
Anyways, the people who should read it if and only if they like cosplay mangas. There are better things out there if you wanna just read ecchi stuff.