Tondemo Skill [Kaze ga Fukeba Okeya ga Moukaru] no Okage de Ore no Isekai Life wa Mamanaranai (Ii Imi de): Skill ga Shimesu "Amayadori" wo Shitara Densetsu no Dragon ga Nakama ni Natte, Kizukeba Oukoku made Sukutteta

Unpredictable = Infinite possibilities!? Enjoying life in another world with an extraordinary, absurd skill!] At the feast for receiving the title of “Hero,” Nova suddenly poured mead on the king. Expelled from the hero’s party for this unexpected action… He reaches a small village where he befriends a legendary dragon and encounters one unpredictable event after another!? It turns out this man was a hidden hero who had achieved numerous accomplishments with the skill [If the Wind Blows, the Barrel Maker Prospers], which “yields unexpected results when completing seemingly meaningless quests”!? Even the king who exiled him eventually discovers that Nova saved his life, and the kingdom can’t possibly leave Nova alone…? He thoroughly enjoys his life in another world with an absurd skill that even he can’t predict!!

(Source: Starts Publishing, translated)