Ochikobore Kenshi, Tsuihou sareta node Majutsushi ni Tenkou suru: Kenshi no Toki wa Gomi Skill Datta "Zettai Kioku" wa Majutsushi ni Totte wa Kami Skill deshita

In a world where swordsmanship and magic clash, Durandal is born into one of the world's most prestigious swordsman families. However, his innate skill is "Absolute Memory." A skill that allows him to never forget anything he has seen or heard, but it was completely useless in swordsmanship where power is everything. Eventually, the banished Durandal encounters "magic," and starts to change the life he had once given up on!!

(Source: Kodansha, translated)