Every year, mysterious Cherry Blossoms bloom all over a crescent shaped island called the island of Hatsunejima... Asakura Junnichi goes to Kazami Academy and has the power to see other people's dreams in his sleep. He was also taught some magic, by an old lady, which allows him to create sweets. One day, Junnichi sees someone's dream again while he is sleeping. In that dream, a girl, who was a childhood friend of his, appeared. However, before he could find out more, he was woken up by his sister, Asakura Nemu, forcing him to come back to his regular life. Nemu doesn't actually have any blood relations with Junnichi but their bond is deeper than that of other real brothers and sisters. So deep, that it gives the illusion that they're lovers. It was another peaceful, normal day. Waking up early in the morning and going to Kazami Academy with his childhood friend Amakase Miharu, the academy idol Shirakawa Kotori and the two sisters Mizukoshi Moe and Mika (who love to eat Nabe on the roof of the Academy). Whilst Junnichi and Nemu were going through their day as usual, their childhood friend, Yoshino Sakura, who they thought had moved to America, suddenly appears. Sakura tells them: "I came to keep the promise we made during our childhood..."