Bridgeben-kun, a junior employee at a renowned undergarment manufacturer, has been working there for just six months, and he's finally starting to get the hang of things. Today marks a special day — he's going on a business trip to Okinawa with his inspiring and competent supervisor, Nanasu-san. It's a day trip, but Bridgeben-kun is excited about the chance to experience Okinawan cuisine and enjoy a few drinks with his admired boss.
As the trip progresses, Bridgeben-kun's usual mishaps come to light — he forgets important documents and even misses a flight due to a scheduling error. But thanks to his supervisor, Seven濑-san, he manages to avoid a major disaster. However, when they arrive at the hotel, they learn that a record-breaking heatwave has caused power outages, leading to flight cancellations and the need for an unexpected overnight stay.
At the hotel, Bridgeben-kun is assigned a room — but not just any room. It's a double room, and the air conditioning is broken, making the heat even more unbearable. As the tension rises, Bridgeben-kun's supervisor, Nanasu-san, decides to teach him a lesson — not just about the heat, but about the importance of being prepared, and even a little bit about intimacy.
The lesson begins with a playful teasing session, moving from light conversation to a more personal and intimate experience. Bridgeben-kun, who's never had a girlfriend before, is both flustered and excited. As the night goes on, the heat, the hotel, and the growing connection between the two bring them closer, turning what was supposed to be a simple business trip into a memorable and unforgettable experience.
By the end of the night, Bridgeben-kun is not only more confident but also a little more experienced — and he's definitely ready for the next time he goes on a trip. As the story comes to a close, Bridgeben-kun is left with a sense of accomplishment, a few memories, and the promise of more adventures to come.