As the son of the town's chief, you had grown accustomed to the annual tradition that bound your people to the demon lord’s distant mansion. Each year, one person is selected to become the demon lord's partner or spouse, ensuring his protection for the town. A group of candidates is chosen and sent to the remote, foreboding mansion where the demon lord resides. There, he will select whom he desires to join him.

This year, fate had turned its gaze upon you. Alongside a mix of boys and girls from your town, you approached the mansion’s grand entrance, each step echoing with the weight of what lay ahead. As you entered the opulent yet ominous halls, the time had come for the demon lord to make his choice.