Toki Tsukai Majutsushi no Tensei Musou

Avis, a struggling student at the borderlands’ sorcery academy, faces an impossible challenge—defeat the academy’s top genius or be expelled. With no other choice, he pushes himself to the limit, training tirelessly despite his weak magic and lack of resources. But no matter how hard he tries, his strength doesn’t improve. Exhausted and desperate, he collapses under the weight of his burdens, all while trying to provide for his blind and frail younger sister, who depends on him.