Nuko Majin - The Red-haired Demon God Ver.2.0 Final (eng) - Adult Sex Game

Machine translate.

The "Dimension Hole", the source of an ever-increasing number of localized monster spawns in the world.
But it is not the army that's sent to deal with with such matters, it is a lone knight of great power
known as the "Demon-slaying General", Agnes Flarebite.
However, her power has been stolen...