The Kurokumo Bushido Academy is founded by 先生Sensei Andreas Leffler (Shidoshi of Kuroi Ryu Ninjitsu 5tth degree black belt) and the academy has affiliate schools in Lubeck Germany under guidance of 先生 Sensei Micheal Bentien (from Lubeck) and in Groningen the Netherlands under 先生 Sensei Arie van den Akker (from Boornbergum).The Kurokumo Bushido Academy is teaching Kuroi Ryu Ninjutsu (Black Dragon Ninjutsu that is brought out to the public by famous well known master of ninjutsu 先生 Ashida Kim)Different Ninjitsu Schools: The following 忍術 Ninjutsu schools are known: Bujinkan (Masaaki Hatsumi) Genbukan (Shoto Tanemura , Jinenkan (Fumio Manaka). Hikokuryukan (Jurgen Oris) , Black Dragon Ninjitsu or the Kuroi ryu Ninjitsu 黒竜忍術 in Japanese (Ashida Kim) , Fuma Ryu Ninjutsu (Harunaka Hoshino), Hosho Ryu Ninjutsu (Yome Shinzato Soke), Koga Ryu Ninjutsu (Suichiro Yunoki) and Iga Ryu Ninjutsu (Kawakami Jinichi). Dux Ryu Ninjitsu (Frank Dux). 先生 Sensei Arie van den Akker (Black Dragon / Kurokumo