Namanaka Hyaku Percent!: Katamusubi no Shinpa / 生膣ひゃくぱぁせんと！ 固結びのシンパ

"Shinpa", the practice of having on one's person a shoelace which color signifies his or her preferred sexual fetish. In this way also is one able to search out his/her ideal partner. (Source: translated and adapted from official site by Cranston)...