Angel's Feather - S01

According to the Binfield Kingdom Chronicle, the peaceful kingdom of Winfield was once ruled by a royal family with magnificent white wings. Hamura Shou, a new student at Yuusei Academy, learns about a boy named Misonou Kai from the headmaster and becomes convinced Kai is his long-lost twin brother. But when a strange earthquake strikes, Shou and two classmates are transported to another world. There, after facing a monster’s attack, Shou unexpectedly awakens his own pair of great white wings.