The Murder Case of Hana & Alice (2015) on Netflix

After her parents separate, 14 year-old Tetsuko (who will soon be nick-named Alice) moves with her mother to a new town in what she calls "The Boonies" and must enroll as a transfer student in a new middle school. She immediately finds herself bullied due being assigned the seat of "Judas" who is said to have been murdered over a year before. She is told that if anybody knows his fate it would be Hana, the recluse in the house next door, who has been unable to bring herself to attend class since "Judas" disappeared.