D.C. Da Capo

The story takes place on Hatsunejima, a crescent-shaped island famous for its cherry blossoms that inexplicably bloom all year round. The protagonist, Junichi Asakura, attends Kazami Academy on the island. He possesses the strange ability to see other people's dreams while sleeping and can use a small magic spell taught by an elderly witch to conjure sweets. This time, Junichi once again saw his childhood "little sister" in his dream, but he couldn't remember her name... Unfortunately, Junichi's pleasant dream was quickly interrupted by his little sister Nemu's prank. However, faced with such a cute sister, Junichi couldn't stay angry. Before going to school, Junichi insisted on taking Nemu's temperature... (the method of measurement is quite special ^^) In reality, Junichi and Nemu are not biological siblings; Junichi's family adopted Nemu when she was very young. Junichi cares for Nemu meticulously, giving others the impression that they are like lovers. At school, Junichi and his group encountered Hakoto Shirakawa, the academy's idol who is popular with everyone, as well as Mifuyu, Nemu's friend. However, because it was the first day of school, a transfer student arrived—she was none other than the "little sister" Junichi had seen in his dream: Sakura Yoshino. Sakura's appearance caused Junichi to panic, and Nemu felt somewhat uneasy. Junichi's panic was justified, as Sakura declared, "I came to fulfill my promise with my brother!" Yet, Sakura's fiery passion made Junichi want to flee... The situation wasn't over yet. That night, Sakura secretly climbed through the window into Junichi's room. The helpless Junichi tried to distract Sakura by using magic to conjure sweets, but Sakura still kissed him when he wasn't looking... This scene happened to be witnessed by Nemu, who had just entered the room. Angrily, Nemu ran out...