After being taken to a dark guild’s training facility because of their father’s debt, one child sends a younger sibling away to keep them safe. Ten years later, the former guild heir finally leaves and returns to the small shop where they once lived with their parents, hoping to run a quiet business while secretly using it as a guild branch. But the shop suddenly becomes popular, unexpected visitors keep appearing, and a prince proposes an engagement. Worse still, the shop may be connected to a magical war that was supposed to have ended 600 years ago. Wasn’t this meant to be a peaceful new life?