Privileged heir Subaru Tendo is forced to work as a new hire and live in a dormitory at his family's apparel company to learn humility. There, he meets Madoka, a thrifty and outspoken coworker who challenges his ego.
A story about a young man who doesn't believe in sincerity meets Don Quixote, the president of an underwear company, and his right-hand man, Sancho, and becomes sincere both in underwear and in life.