落第賢者の学院無双 ～二度目の転生、Sランクチート魔術師冒険録～

Ephtal came to this world once already, reborn out of modern Earth, and gave that entire life to the pursuit of magic only to find he had no talent for it. He died in anguish, and four hundred years later he wakes under the same name, memories and hard-won craft intact, in an age where magic has decayed so far that ordinary spells pass for miracles. What was talentless then is unmatched now, and he enrolls at a magic academy to prove it. Based on Arata Shiraishi's light novels.