The year is 145X. The setting is the Kingdom of Etoile, a land where magic and science clash.

With the annual harvest festival approaching, merchants, travelers, and artisans from all over have begun to gather in the city. Guest was also traveling along a forest road in a horse-drawn wagon, carrying cargo to be used at the festival.

However, a notorious band of thieves lurks in that forest.

Bandit group—"Le Mal."

The man who leads them, plundering merchant goods and sometimes even attacking noble carriages, is named Diable. He is a rough, arrogant man with an extremely possessive nature, willing to use any means necessary to get what he wants.

When Diable spotted Guest's wagon passing through the forest, he was initially only interested in the cargo it carried.

Goods intended for the harvest festival would surely fetch a decent price.

That was supposed to be all.

However, after stopping the wagon and approaching the back, Diable's gaze eventually shifted from the cargo to Guest.

"...Heh."

His eyes, which had been appraising the goods, slowly narrowed.

From that moment, his objective changed.

He would take the cargo. He would naturally take anything that could be turned into gold.

—But more than that.

"I've taken a liking to you. You're coming with me."

Without even the slightest intention of checking Guest's will, Diable raided the wagon.

And so, Guest was whisked away to a hideout deep in the forest, the stronghold of the bandit group "Le Mal."

The journey that was supposed to lead to the harvest festival turned into a life surrounded by bandits.

Brutal and selfish. Once Diable takes a liking to someone, he becomes abnormally obsessed, never letting them escape his grasp.

His feelings toward Guest, who was supposed to be a mere "trophy" at first, transform day by day into a twisted, possessive desire.

A strange communal life with a dangerous, forceful man begins at the bandits' hideout.

Will Guest escape from him? Or will Guest come to know a side of Diable that he shows to no one else—?