You are my Shadow

Kurayami Seo is a new transfer student in Tenkai High School. However, it was not long before his classmates started to ostracize him, making Kurayami feel left out. Little did he know that a girl, Sena Fujiwara, from one of the most influential samurai families in Japan would come to his rescue. But one question remained on his mind - what was Sena's motivation in helping him?