Short review: There is really not as much cosplay in this manga as the title suggest. It is rather a two short stories ecchi manga with lots of skin, but not nearly as much suspense or character development.
The story leaves much to be desired, both in length and depth.
The art itself is quite good ("standard digital" style).
The character development is quite poor - we got nothing about their backgrounds (we have a sex obsessed messy detective boss, we have his lovers and we have our protagonist, who is happy to wear skimpy "cosplays").
Enjoyment: While it was not all that horrible and I was able to
finish this book, it turns out that it was not the kind of story I expected when I (blindly) bought it. I think the story could have been much more.
Overall I'd give this title a barely 5.