In the extraordinary setting of a school trip, four students fully enjoy sightseeing in Tokyo. At this moment, they encounter a fateful door and embark on a 'first-time escape game' on the MM train, offering a thrilling experience. The curiosity and desires of young men and women intertwine, leading them into unexpected developments. While everyone has their own preferences in attire, seeing the important parts surely ignites excitement! This project is undoubtedly rated ★5, with the cuteness of the girl on the left side of the third group standing out. For these students in the peak of youth, it is sure to become an unforgettable memory.