Tsukasa Tenma was the son of rich parents, he had everything. He lived in a luxury apartment, but it all had one huge disadvantage. He was completely alone. his parents lived in another country, they were constantly on business trips. Tsukasa rarely saw them, they came, gave him gifts and left back. Tsukasa spent his entire childhood with a babysitter. Now he lives alone. One summer after school, Tsukasa was sorting through a closet with old things and found his childhood photo. This photo showed Tsukasa and a boy with purple hair. In the photo, they are both eight years old, Tsukasa immediately remembered this boy. His name was Rui. They often spent time together and went to the same school. But one day, Tsukasa's parents transferred him to a private school and the two boys did not see each other anymore. Tsukasa decided that he needed to establish contact with Rui, because besides him, Tsukasa had no friends. Tsukasa persuaded his parents to return to their old school. And when the school year came, Tsukasa stood in front of the door of his new school