And now! A flat-chested girl's men's bath challenge. At a hot spring inn, discovered as a girl by a big-dick old man and creampied again... This is super the worst~~~!

皆月光与由良佳奈在温泉旅馆中展开了一场别开生面的挑战。两位平胸女孩化身男装，试图在男汤中混入，享受温泉的放松与乐趣。然而，她们的秘密很快被一位大叔识破，随后一场意外的纠缠让她们陷入了尴尬而刺激的境地，面临着无法预料的后果。