When Hasegawa, a high school first year, is on his way to his new dorm he gets trapped in a crowded train. As the train is moving Hasegawa continues to bump into the boy standing next to him, somehow Hasegawa's school bag gets stuck between the boys legs without any room to go anywhere else they are forced to deal with the situation. Hasegawa continues to struggle at pulling his bag back to him, but only makes the situation worst. The boy becames unwillingly aroused by Hasegawa's hand. Only when the train doors open they are able to excape there awkward situation.