Shikkakumon no Saikyou Kenja

Mathias Hildesheimr is a 12-year-old boy who, unbeknownst to others, holds the reincarnated soul of a powerful mage from a past era. His mark, once considered the most powerful, is now viewed as the worst due to its association with an era of advanced magic and swordsmanship. This discrepancy between his expected abilities and the reality of his new world is further complicated by the fact that magic equipment has deteriorated and basic spells have been forgotten. At the Second Royal Academy, Mathias's exceptional swordsmanship earns him recognition, but he soon discovers that the world faces a new threat from dark forces.