Total coincidence leads to Satomi planning the wedding of her good friend from high school， Haruka． During a pre－wedding get－together between the two， Haruka brings up the subject of physical compatibility， going on about how ”good” her husband－to－be is． From that point on， all Satomi can think about is exactly what her friend meant －－ until one day， when Haruka’s husband－to－be shows up at Satomi’s workplace by himself， she gets the chance to find out！