Story

The world faces an invasion from the "Otherworld," a dimension that corrupts beings with its magic, transforming them into powerful "Monsters." These corrupted entities serve as the vanguard of the invasion, posing a grave threat to humanity.

To counter this threat, a hero and heroine are granted special powers to defeat monsters, purify the Otherworld's magic, and prevent further incursions. This particular story focuses on one such righteous hero and his partner, a heroine who is also his lover.