Last year, I discovered this game called Manicured Nails in Bloody Red (aka M.N.I.B.R.), I very quickly found that it was lost and the only people who might've had it were people who posted their high scores online.
The game was a first person shooter made by a company called D-Mebius or Mebius Co. Ltd. (same company also made a series of Madoka Magica games), and was released for free on the google play store. I really couldn't find a download link of it anywhere, there are sites that claim to have it but it's pretty clear they don't since the download doesn't work.
Info about the game: d-mebius.com/mnibr/mnibr.htm applion.jp/android/app/d_mebius.shooter/