This story takes place on the island called the Southern Cross Island. Once at night, the boy named Takuto arrived ashore after swimming with the mainland. Later, he enters the middle school of the Southern Cross in the older class and makes new friends. However, under the school there is a group of mysterious giants called Cybuddies. There are about 20 cybuddies, and these are just some of the few secrets stored by all on the island: the secret movements of the mysterious organization, known as Kirahoshi Juujidan, the songs of the sanctuary. Takuto himself will soon hug a big secret. from Wikipedia