Shinmai Ossan Boukensha, Saikyou Party ni Shinu hodo Kitaerarete Muteki ni Naru. Episode 1 English Subbed

Rick Gladiator is a thirty-year-old S-ranked adventurer and has great magical powers. First, it was considered as the magical power where achieved by those who started their adventure at a young age. But Rick proved it wrong and started his journey at the age of thirty and even he got one of the highest strength ranks of adventures. He has his team and he fights against all the monsters and that adventurer who underestimates him.