Originally a live drama named チェケラッチョ!!　Toru, Yui, Akira, and Tetsuo are senior high school students in Okinawa, Japan's southernmost prefecture. A sprawling blue sky and crystal sea are common sights in this prefecture known for its breathtaking scenery. The four have nothing to be passionate about, just spending days complaining about their boring school life. One day at an aquarium, Toru meets a hot lady, Nagisa, and gets infatuated on the spot.