Moumoku Kensei Raguna ~Tensei Shita Kensei wa Mi e Nakute mo Saikyou desu~

https://www.cmoa.jp/title/344921/ A man once hailed as the "Sword Saint" is reincarnated hundreds of years later as a blind boy named Laguna. He enrolls in the royal capital's sword school, but is looked down upon and treated unfairly because of his blindness. However, even without his sight, his swordsmanship remains undiminished. With the swordsmanship he once mastered and his senses honed to perfection, he defies convention and grows into a swordsman feared by all. There are realms that can only be reached by being unable to see—this is the story of a blind swordsman who carves a new legend.