Kazuki Tanaka is just an ordinary convenience store clerk living a peaceful, predictable life in the quiet town of Midori. But everything changes when Lilith, a stunning yet terrifying demon princess, storms into his store, mistakes his mop for a legendary sword, and declares him the “Great Hero” who defeated her father. To seal a peace treaty between the human and demon realms, she proposes marriage—on the spot.
Before Kazuki can explain the obvious misunderstanding, Lilith puts a magical engagement ring on his finger, binding him to a contract he can’t escape. Now, Kazuki must survive life as the unwitting fiancé of a demon princess while the real Great Hero desperately tries to undo the mix-up.
Caught between otherworldly politics, comedic misunderstandings, and his new fiancée’s relentless determination to win his heart, Kazuki’s simple life is over. But hey, at least he still has his mop.
