The Revenge of the Soul Eater

Sora Mitsurugi's life isn't going as planned. Disowned for incompetence by his renowned Sword Saint father, dumped by his fiancée, and banished from his island home, he sets off to prove himself as an adventurer on the mainland. But when his new so-called-comrades deceive him and use him as bait for a dangerous monster, he finds himself on the precipice of death. Just before his demise, a raging power courses through his body and he is reborn as the legendary dragon, the Soul Eater! Now, with his newfound strength, Sora is out for revenge! (Source: J-Novel Club)

The Mitsurugi household was given the important task of guarding the demon gate by the emperor. Sora Mitsurugi, who was the heir of the family, was called on to take the trial ceremony at the age of thirteen. He has to overcome the trial in order to learn the phantom blade style that was passed down the Mitsurugi household from generation to generation. The other seven pupils of the same age who had taken the trial have all passed. And now only Sora remained. His father, brother, fiancee, and a pair of siblings who have watched over him were all looking, as Sora’s trial ceremony solemnly began…