Cautious Hero: The Hero Is Overpowered but Overly Cautious

Description

The goddess Rista summons a hero to help her hard mode video game-like world. The hero, Seiya, is exceptional in every way, but he is incredibly cautious to the point of buying three sets of armor \(one to wear, a spare, and a spare for the spare\) and going full power against weak slimes \(just in case\).