Accident Beach (アクシデントビーチAkushidento Bīchi) is the fifteenth episode of the Golden Time anime series, which aired on January 23, 2014.
On the day of the trip to the beach, the group encounters several mishaps on the way to the beach. It starts off with Kōko and Banri meeting 2D-kun at the wrong place, and delays in picking up Chinami and Mitsuo. Then there was heavy traffic to exit the city and it rained despite the forecasts indicating that there was not supposed to be any rain. Despite the delays, the group made it to the beach 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 through. The rain stops and the group enjoys their day at the beach. With 2D-kun feeling exhausted that 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.