Sugar Apple Fairy Tale, Vol. 3 (manga) — Miri Mikawa

In the Kingdom of Highland, humans use fairies. Anne is aiming to become a Silver Sugar Master like her late mother, and together with the foulmouthed warrior fairy bodyguard Challe, and Mithril, a fairy who has vowed to repay her, she's been diligent every day. One day, as their travel funds start to dwindle, Anne hears of a money-making opportunity for candy crafters, and her interest is piqued...