Mahou Meika ni Tensei Shita Saikyou Kensei

Picked up by the Arclight family, one of the empire’s greatest sword families, Xeno devotes his life to becoming an unmatched Sword Saint. However, his loyalty is met with brutal betrayal and death by Atlas, the head of the house. Upon dying in despair, Xeno awakens reincarnated as a prodigy in the empire’s top magic family, a rival to his former house. Determined to gain the power needed to crush Atlas, he displays overwhelming skill in both magic and swordsmanship while rising through the ranks at the elite Royal Academy. Original Webtoon