Matthias T. J. Grimme, aka Drachenmann aka Tatsu Otoko was born 1953 in Hamburg, Germany. Since 1989 he is co-publisher of the biggest German SM-Magazine Schlagzeilen (http://www.schlagzeilen.com). Here he published many articles about BDSM. He is also well known for being the author of "The SM-Handbook" and "The Bondage-Handbook" (the german standard handbooks for BDSM people) and for "Das SM-Handbuch Spezial 1", "Das Session-Kochbuch", "Japanese Bondage". He is BDSM-performer and SM- and Japanese Bondage Teacher (since 2000) with own workshops in Hamburg and Europe. He is the owner of the online supply of Bondage Project (http://www.bondageproject.com). He has been in Tokyo several times, being the second westerner, who does public Bondage-Shows in Japan. He has met Osada Eikichi, Osada Steve, Akechi Denki, Randa Mai, Kazami Ranki, Yukimura Haruki, Kinoko Hajime and other Japanese Bondage People. His Bondage-Style is a mixture of what he has seen in Tokyo and his own inspirations. People call his stuff "Hamburg School". Since 2000 he also works as a photographer and filmer, rigger and ropeartist in Japanese Style Bondage (Shibari).
Kinbaku Today was founded in 2014 to promote kinbaku, the art of Japanese erotic rope bondage, to the Western-speaking world.
Since its inception, Zetsu has served as the founding editor for the site, publishing contributions from authors in the US, Europe, Australia, and Japan.
The goal of the site is to provide a forum where people can read announcements about events, books, and video releases, read interviews with Japanese bakushi and models, study tutorials, view galleries of both Western and Japanese rope artists, and learn more about the history of the art of kinbaku.