Let's crash at the cute nurse's place and pretend to be her boyfriend! Enjoy a day date with Mizuki, who works at a general hospital in the Kanto region. Though the plan was just to spend time together and then take her home at night, things take an unexpected turn. What starts as a simple coffee hangout gradually shifts in atmosphere, and before they know it, the last train has gone—now what? This film carefully captures how the pushy pretend boyfriend wins over the active-duty nurse, like a runaway locomotive blasting through a tunnel. Packed with thrilling excitement and heart-pounding moments hidden within everyday life!