From Visual Novel Database:
Developer and publisher: Dharker Studio (Before December 2018) (Contain NSFW content) and NickySwan
Released in 27 January 2016.
Consist of 160 CGs.
Full gameplay video of first short story on YouTube by tr1ppa
Full gameplay video of second short story on YouTube by dsc
Full review of game:
Steam store page:
Nutaku game page (Website contains NSFW content):