Cosplay Tantei Nama Kigae♪

Main character is an ordinary college student. One day he is taken to a cabaret by his sempai and falls in love with hostess Sakura at first sight. However, in reality she is a woman detective who loves cosplay. Protagonist decides to work as her assistant, and he has to squeeze into nurses, maids, shrine maidens etc costumes while she wears female police officer uniform. Depending on the content of requests, sex techniques need to be applied to successfully fulfill the cases.

[From vndbreview]