On the day of the trip to the beach, the group encounters several mishaps on the journey. It starts off with Kōko and Banri meeting Nijigen at the wrong place, and delays in picking up Chinami and Mitsuo. Heavy traffic slows their exit from the city. It rains despite contrary forecasts. The group arrives in the middle of a rainstorm. Needing to use the restroom, Kōko gets out of the car in her swimsuit, and the rest of the group follows. The rain stops and the group enjoys their beach day. With Nijigen feeling exhausted, Kōko instead drives the car back home. Along the way, Banri falls asleep despite trying his best efforts to remain awake. Shortly afterword, Kōko becomes tired and falls asleep at the wheel. Moments before the car swerves out of control, Banri wakes up and hits the brakes, causing the car to come to a complete stop after colliding with the guard rail.

(Source: Wikipedia)