Senshusei course (専修生コース, senshūsei-kōsu)[1] is an intensive, 11-month aikido training program conducted at Yoshinkan Aikido's honbu dojo (headquarters and main training hall) in Shinjuku, Tokyo, Japan.[2][3][4] The course has received attention through Robert Twigger's book, Angry White Pyjamas (1997).[4][5]