A young couple, Osuke and Kyoko, go on a bike hike on Sunday and have fun playing with moving green trees, airplanes, swings, flying trains and high-speed airliners at the amusement park.A young couple, Osuke and Kyoko, go on a bike hike on Sunday and have fun playing with moving green trees, airplanes, swings, flying trains and high-speed airliners at the amusement park.A young couple, Osuke and Kyoko, go on a bike hike on Sunday and have fun playing with moving green trees, airplanes, swings, flying trains and high-speed airliners at the amusement park.