Hitozuma, Mitsu to Niku Episode 1

There once was a maou Astaroth who invaded the human kingdom, plunging the world into war. However, he was finally suppressed by a group of heroes who took his powers and sealed him deep underground. Two hundred years later, there were rumours that the seal

After answering the summons of Momoka, the school nurse, the protagonist is forced to engage in various sexual acts with her.

Later, the protagonist accidentally witnesses Momoka’s younger sister, Maron, masturbating. He is discovered and Mar