If you are looking for similar entertainment content involving "Oni" girls or ogres, you may be interested in these actual releases: Official "Oni" Media and Games
Be extremely cautious when searching for "free downloads" of niche or adult-oriented titles. Websites offering "free downloads" for software that is not clearly open-source or officially freeware often host: Oni Boku ~Molesting Ogress Girl~ Free Download
: A retro-style shoot 'em up (shmup) featuring cute "oni girls" and monster girl boss encounters. If you are looking for similar entertainment content