He was arrested for assault after kicking a 36-year old man and grabbing him by the shirt collar on February 19, 2009. It was reported that he was angry because his picture was being taken with a cellphone camera. The incident happened on a JR Joban Line train at Minamisenju Station. All of the charges were dropped and he was released from jail on February 21 after he served 40 hours in jail and apologized to the man.