Akira Shiroyanagi, lover of games and candy, faces a mysterious girl named Mion one morning. She drags him into a strange game where the players gain special abilities. Akira aims to win using his new powers and intelligence.

Suddenly summoned to a fantasy world and betrothed to a princess, Kazuya Souma is crowned the new king. Unlike those before him, he won't be using swords and magic to rule; will administrative reform really get this kingdom back on track?