The number of public bathhouses continues to decrease in modern Japan. Amidst this, there are four beautiful sisters who inherited and run a traditional sento from their parents. Their bright and resilient work ethic endears them to customers, doubling their sales and making the business thrive. However, they have a secret known to no one. That is, they are lesbians and engage in lesbian sex whenever they have free time during opening preparations or closing duties! Delving into the secret sex lives of these four sisters!
