Mayama Haruki and Himemiya Tsukiko have been childhood friends and
neighbors for as long as they can remember, but after a girls-only
meeting in fourth grade, Himemiya distanced herself from Mayama. Now in
their 2nd year of middle school, Mayama has become an ero-freak who
specializes in harassing Himemiya.
Determined to unravel the greatest secret of girls, what happens on "that day", Mayama follows Himemiya and uncovers...!
("that day" for girls may not be what you think it is)
