Ee, Nouryokunashi de Party Tsuihou sareta Ore ga Zenzokusei Mahoutsukai!?

Tyler, an adventurer, for some reason his magical abilities that should awaken in anyone, haven't been awakened. Because he can't use magic, he is left behind in the depths of the dungeon by the party leader. However, when facing the desperate situation of his childhood friend Ariana, who stayed for him, his hidden power awakens! What he obtained was unprecedented – the ability to use all attribute magic. After safely escaping the dungeon, Tyler hears about a herb that can cure his sister's illness, and sets a goal to challenge the super-advanced dungeon, forming a new party.

(Source: AlphaPolis, Translated)