Rising (uncensored-eng) by Zero-One - Adult Sex Game

Mai Saotome is a member of the private police force. She becomes the bodyguard of the son of a millionaire, but this is just a front. Mai and her partner Takayama begin an undercover investigation into the father's giant company called Dibero. But during the investigation, Takayama goes missing. Then Maya begins her personal investigation to find a partner, reveal the secrets of the company and secret experiments conducted there. But there are many dangers along the way...

When passing the game, you are given passwords with which you can continue to learn the plot and view interesting sex scenes.