Shinchou Yuusha: Kono Yuusha ga Ore Tueee Kuse ni Shinchou SugiruEnglish:
Cautious Hero: The Hero Is Overpowered but Overly Cautious(wouldn't ket me put japanese name in topic title, kept saying must enter valid topic title.)
https://myanimelist.net/anime/38659Genres: Action, Adventure, Comedy, Fantasy(some spoilers in MAL synopsis below just a warning, nothing major)In case, you haven't seen it and don't want any of it spoiled.
Goddess Listarte, the savior of the super hard-mode world Gairbrunde, summons a hero to her aid. The hero, Seiya Ryuuguuin, holds the cheat-rank status, but he is ridiculously cautious. For instance, he would buy three sets of armor: one to wear, a spare, and a spare for the spare. Beyond keeping an absurd amount of item stock, he remains in his room for muscle training till he reaches the max level and fights slimes at full power just to stay on the safe side.