From MangaHelpers For his beloved younger sister's treatment, Shinomiya Ryouma is working frantically to raise a billion yen while going to high school. One day, a mysterious woman asks him, "Can you put your life on the line for what you desire?" and after receiving a ticket from her, an accident befalls him! When he wakes up, he finds he's turned into a girl and what's more, he's participating in a "game" where a win means he can reverse his fate but a loss means he'll die instantly! (Euthrosyne)

The Kingdom of Commons is a continent located in North Arcadia. Mitia Commons is the princess of the kingdom, and she is so extremely shy that she has barely ever ventured outside of the castle. Now, out of the blur, her mother, the queen, declares that she must go through a ritual in order to become qualified for the throne. The ritual requires that Mitia to collect four powerful stones to complete a magical staff. By doing so, she will overcome her extreme shyness. She embarks on an adventure with her friend and bodyguard, Atty and Sasha, in order to search for these four stones.

On the world that consists of a single giant continent called Dokkanon, most people have some kind of special ability. Those who have a high-ranking ability, such as the ability to control water, are respected and granted much power. Those with low-ranking abilities, such as Nana, who controls bananas, and her best friend Ringo, who has super-powerful legs, have very little power in society. When Nana and Ringo were kids, they were awed by stories from Ringo's adventurer father about a land called Oz, where a god lived who could make any wish come true. Nana and Ringo swore that they would go adventuring together when they were adults. But as time went by, Ringo's father vanished while adventuring, and Ringo became much more aware of the social stigma associated with adventurers. Will the two of them find the strength and courage to follow through with their promise?