I Was Summoned as the Academy's Janitor… But I Accidentally Became the Most Overpowered Harem Protagonist?!

‎I was summoned to a magical world… to clean. ‎Not to fight dragons. Not to save kingdoms. ‎Just clean. ‎ ‎My name is Zephyr Arclight, and I’m the janitor of Solstice Magic Academy. But something’s wrong — my mop nullifies ancient curses, my “cleaning aura” heals fatal wounds, and somehow I’m stronger than the Headmaster. ‎ ‎Now every noble girl in school wants to duel me, the Demon King’s daughter calls me her fiancé, and the Princess just confessed her love… after I accidentally beat her in a duel while half-asleep. ‎ ‎I just wanted a peaceful life… ‎But I might be the most overpowered harem protagonist this world has ever seen?! ‎ ‎> A light-hearted fantasy filled with action, magic, romance, and accidental heroics!