Summon a Hero from Another World to Defeat the Demon King… That’s the history of the Kingdom of Fugargan. This time, the saint Christella is called to witness the summoning of the seventh-generation hero. A gentle, cute, and virtuous saint… or so it seems. In reality, she’s foul-mouthed, quick to fight, and terribly lazy. Wanting nothing more than to finish the summoning ceremony and go home, she watches as the ritual unfolds—only to discover that the one summoned is the Demon King himself!? Now, she must embark on a journey to defeat the Demon King… together with the Demon King! A ridiculous, chaotic adventure begins!