「魔力不足のため、辺境に追放される！」“Due to your lack of magic power, you are banished to the frontier!” Yuo, the duke’s daughter who had an unknown and useless skill was shunned by her family due to her “incompetence”. One day, her family assigns her as the lord of a remote, demon-infested frontier as banishment. She arrives at the poor village and finds a strange flooded swamp. Using her [Heater] skill, she transforms the swamp into a hot spring. Realizing the miraculous power of hot springs, she decides to develop a hot spring resort. Various talents start to gather from all over the world, attracted by her hot spring territory. Join Yuo as she struggles to transform her poor domain into a rich, independent nation. May the world learn the glory of hot springs! Viva, onsen!