Kimika is on a company trip with her husband, who runs a company. She was looking forward to the trip as a way to thank her employees for their hard work and as a reward for herself for supporting her husband. When she arrives at the inn, she relaxes in the hot springs, but... When she gets out of the bath, she is greeted by an intense heat in her body. Little does Kimika know that the cause of the heat is the Manjuntou potion her husband's subordinates had prepared...