Camisole

Heroine Tenjin Shima is a manager of the lingerie shop, but on the behind this is a private investigation organization. One day a request is received from the National Universtity to find the professor missing for a week already. All that's known is that professor was interested in excavation of an ancient civilization and searched for a hidden treasure.

Synopsis looks exquisite, but story is quite simple. It develops without any mystery solving. Second half is crumpled and ends poorly. Many characters that show up aren't even involved in story in any way, more like random characters to fill the gaps. Game's very short as well, reaching 2 hours length only for slow-readers.