Sato works at a "black company". Every day, he has to work from the morning of the previous day until the morning of the next day, with no time for sleep, so he has never thought about having a girlfriend. Suzume is Sato's neighbor, she is a very kind person, always asking and caring for Sato, even cooking food for him to supplement his nutrition. However, Suzume is quite "revealing" in her clothing, always wearing outfits that expose sensitive areas in front of Sato. Every time he meets Suzume, he has to try very hard to restrain himself. But one day, while bringing back a food container to return to Suzume, Sato suddenly hears her scream. Suzume rushes out of the house and hugs him tightly. It turns out there is a cockroach in the house, and Suzume, terrified, asks Sato to help her deal with it. So the two of them go inside to look for the cockroach that is hiding somewhere. While searching, Suzume continuously presents her beautiful butt right in front of Sato. Unable to hold back any longer, he crosses the line. Suzume does not seem angry; on the contrary, she even responds and complies with him. And his life changed from that moment on...