Teng Kongyi once made a promise to Matsuoka Rin in Australia. But after a kidnapping, he suffered a head injury in the water, lost his memory, and underwent a dramatic change in personality. He forgot everything, including his promise to Rin, and woke up afraid to swim. Teng Kongguang, his twin brother, switched identities with him so that his younger brother Yi could stay at Iwatobi under his name. At Iwatobi High School, Teng Kongyi also met his childhood friends Nanase Haruka and Tachibana Makoto. What kind of story will the Teng brothers and their friends have at Iwatobi High and Samezuka High?
Theme: Let me show you a world you've never seen
