The protagonist of this manga is a 29-year-old dispatched worker named Yukiyo Fujimoto, who has never had a girlfriend. One day he suddenly has calls and texts from several women, some of whom he hasn't met so long.
He realizes this is his popular period of time among women(moteki) and starts to struggle with a feeling of inferiority and lack of experience.
Yukiyo's indecisiveness is really frustrating, but it may capture kind of truth about human nature.
What is strange to me is the reason why Doi-san falls in love with Yukiyo. I know it's a silly question, but I think she could have gone out with much better guys. Is she so-called in damenzu syndrome?