Doryoku Shisugita Sekai Saikyou no Butouka wa, Mahou Sekai wo Yoyuu de Ikinuku.
努力しすぎた世界最強の武闘家は、魔法世界を余裕で生き抜く。
A martial artist who died is reborn in a world where magic is part of everyday life, given the name Ash. Learning he cannot use magic, he is left by his parents in the wilderness at age five. A former hero rescues him and trains him, and despite his efforts, Ash remains unable to wield magic by age sixteen. Unbeknownst to him, he has already gained the strength to single-handedly defeat a demon lord.