Ichihara Tatsujou, a 21 year old virgin, begins dating Asahina Rinko, a beautiful woman who is inexplicably interested in him.<br /><br />After the two begin dating, however, she reveals that she's only interested in virgins; as soon as the two have sex, she will dump him.<br /><br />Unwilling to give up on his first ever girlfriend, Tatsujou makes it his mission to convince Rinko that there's more to love than a short fling ending after sex.<br />At the same time, Rinko concludes that she will seduce Tatsujou by any means necessary, and then immediately break up with him.