Shinmai Ossan Boukensha, Saikyou Party ni Shinu hodo Kitaerarete Muteki ni Naru., Ore wa Subete wo "Parry" suru: Gyaku Kanchigai no Sekai Saikyou wa Boukensha ni Naritai Recommendations
Magic fantasy RPG adventure worlds settings
Theme of "training hard to become powerful"
Both MCs are middle-aged musclehead adventurers
Both MCs underestimate their own power and ability and are filled with doubt
both comedies of misunderstandings, MCs who think they are bad even though they are very strong.
