Miyako, a university student and a girl who describes herself a frugal. One day, she has a meal with Yui, a class friend she knows. On the way home, Yui invites her to a love hotel. Miyako is reluctant, unwilling to have her first time with a friend.

However, Yui cuts her off, offering her 1000 yen for the taste of her femininity! Subsequently, Miyako ends up in the love hotel bed many more times for Yui..

How did it end up like this??