A chance encounter at a public bathhouse draws the ordinary young man Takeo into an unexpected world of shared sauna sessions and awkward, flirtatious close calls. The story follows Takeo as he repeatedly finds himself in steamy, enclosed spaces with a series of attractive women, beginning with the cheerful and forward Akari, then expanding to include the reserved Suzune and the glasses-wearing beauty Moka. What starts as a simple visit to the sauna quickly escalates into a series of increasingly intimate and comedic situations, with Takeo struggling to maintain his composure as the women around him grow bolder. A major story arc takes the group to a resort hotel for an overnight sauna trip, where the dynamic shifts from a casual one-on-one encounter to a three-on-one situation that tests Takeo’s luck and self-control during a series of near-disasters, including a peek-a-boo crisis in the mixed-gender bathing area. The manga blends slice-of-life comedy with risqué romantic tension, focusing on the chemistry between Takeo and each of the female leads as they spend time together in the relaxing, sweat-soaked atmosphere of the sauna. Throughout the ongoing series, the characters’ relationships deepen through repeated shared experiences, with each new location and situation bringing fresh opportunities for embarrassment, connection, and playful teasing. The setting is grounded in modern Japan, revolving around bathhouses, saunas, and the quiet intimacy of steam-filled rooms, where the boundaries between relaxation and romance begin to blur.