DISCIPLE OF THE HOLY SWORD

Though Leon has years' worth of training in swordsmanship, it's still not enough to defeat his rival at the royal academy, Lionel. That is until one day, the holy sword Elsyd appears and names Leon as his chosen hero and new pupil. The young swordmaster didn't expect the holy sword's instruction to be easy, but now Elsyd is even trying to teach him how to... see? If Leon can manage to endure this, will he finally be strong enough to beat the privileged Lionel and earn his place in the world? (Source: Tapas) — Description from AniList community (anilist.co).