​Welcome to the enticing world of Futanari Club, where a group of high school students embark on a research project in the enchanting Manra Valley onsen. While officially studying the indigenous harvest festival, their true intention is to indulge in a delightful and sensuous vacation. Unbeknownst to them, the hot springs contain a powerful aphrodisiac, intensifying their desires beyond imagination. Join these energetic individuals as their journey transforms into a playful exploration of forbidden pleasures, captivating both their bodies and minds. Discover the alluring secrets that await within the Manra Valley onsen and witness the thrilling encounters of Futanari Club in this enticing hentai tale.​