Trapped in a fantasy world that operates according to the logic of his favorite game, Kousuke can craft almost anything from the right materials, and controls a vast inventory of precious resources. The twist: he is now owned by a sexy dark elf who isn't shy about giving orders! With the village under siege by wild beasts and plenty to do in the bedroom, Kousuke has no time to rest as he crafts weapons from his home world...and teaches his Mistress a trick or two!