I was kicked out of the hero's party because I wasn't a true friend, so I decided to live a slow life in the frontier.

A fantasy world where a girl with the protection of the hero fights against the Demon King. In this world, Red, who has the protection of the "Guide" and only has a high initial level, has been fighting as part of the initial party of her sister, the hero. However, with her high level protection and no magic, martial arts, or supernatural powers, she gradually finds herself unable to keep up with the battles, and eventually one of her companions, a sage, tells her "you're not a true companion," takes away all her equipment, and kicks her out of the party with just a copper sword. Completely broken-hearted, Red doesn't care about the fate of the world and decides to live an unassuming and happy life on her own in Zoltan, a remote area far from the battle with the Demon King's army, and uses the knowledge she has acquired on her journey to save up money to open an herbalist shop.