Hangyaku no Soul Eater

The Mitsurugi family was entrusted by the emperor to protect the demon gate. At thirteen, Sora Mitsurugi, the family’s heir, was required to undergo a trial ceremony to master the phantom blade style, a technique inherited through generations. Seven other students of the same age had already completed the trial successfully, leaving Sora as the last one. As his trial commenced, his father, older brother, fiancée, and a set of siblings who had been close to him all observed the event.