In this series, the girls are asked to enter the men's hot springs filled with regular customers with just a towel on. The legendary S-class actress Yuuna Mizumoto takes on a number of extreme missions! In addition to super extreme missions such as "I'll wash you with my breasts and mouth" and "I'll show you an masturbation show," she even has sex in a see-through gym suit! Yuuna's shame meter is on the verge of going overboard with embarrassment! Yuuna's captivating 100 million yen body makes all the male customers stand up!