Sora Tobu Violin

Unable to fit in at his new school or bring himself to pick up the violin he's studied for years, Yoshida does his best to simply muddle through life—until the day a curious new girl named Satella simply appears in the middle of music class. No one else, however, seems to notice her arrival, much less find this sudden, unexplained addition to their class roster unusual. Who is this strange new soul, and what does she want? One thing's for sure: aſter making first contact, Yoshida's world will never be the same...

(Source: Kodansha USA)