Mareido ~Choukyou no Yakata~

In a world where demons and humans coexist, a legend says that a crimson moon will rise when great change is coming. The protagonist lives with his new wife in a mansion until she orders him to train a mysterious girl brought there. As the intense sessions unfold, they discover what's missing in their hearts. Can love bloom in such circumstances? Then, the blood-red moon ascends, covering the sky in its ominous glow.