Namanaka Hyaku Percent!: Katamusubi no Shinpa
Genres: Hentai
Type: OVA, Episodes: 3
Aired: Nov 23, 2012 to Jun 7, 2013
Studio: Studio 9 Maiami
Source: Manga
Rating: Rx - Hentai
Synopsis:
"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)