Cho Dengeki Stryker, a hentai game developed by OverDrive. English localization by Mangagamer. Originally released in Japan on June 24, 2011. Download on Nutaku.net for $45.00. For PC Windows. Full voice acting.
You are Dengeki Stryker, the living cyborg hero who protects Japan. Battle the forces of the Balboran empire and romance beautiful women. Exciting battles and drama await you in this sci-fi adventure for the ages!
The plot could easily be adapted into a weekly anime series. Cho Dengeki Stryker is full of classic anime tropes from the jealous tsundere, to the shy girl with no confidence. Only here, the fun doesnt end with the fanservice!
Source: N4G PC [NSFW] Hentai Game Review: Cho Dengeki Stryker