Henkyou no Ofuroya-san, Harem ni naru ~Yamaoku ni Arusabireta Onsen no Kounou ga Chiutosugite Onna Bouken-sha ni Daininkina Ken~

The Frontier Bathhouse Turns Into a Harem: The Old Mountain Hot Spring with Cheat-Level Powers That Female Adventurers Can’t Get Enough Of, The Frontier Bathhouse Turns Into a Harem: The Overpowered Effects of a Run-down Hot Spring Deep in the Mountains Make It Super Popular with Female Adventurers, Harem in the Middle of Nowhere: An Abandoned Bathhouse in the Mountains Has Become a Magnet for Beautiful Adventurers Thanks to a Cheater Source, 辺境のお風呂屋さん、ハーレムになる　～山奥にある寂れた温泉の効能がチートすぎて女冒険者に大人気な件～

Synopsis Henkyou no Ofuroya-san, Harem ni naru ~Yamaoku ni Arusabireta Onsen no Kounou ga Chiutosugite Onna Bouken-sha ni Daininkina Ken~

A Cheat Hot Spring That Heals Female Adventurers, Makes Them Stronger… and Leads to Steamy Mixed Baths?!

Deep in the mountains, a young man named Rio manages an old, run-down hot spring. Using his mysterious skill, he adjusts the properties of the waters only to discover that what he thought was ordinary is actually cheat-level powerful!

News spreads fast, and soon female adventurers of all kinds flock to the spring. But there’s a catch… the waters don’t just heal; they also awaken certain desires…