underground Muay Thai fights since he was a teenager. A 23-year-old weapons master, who dresses in a small pink kimono; underneath she wears bandages over her chest and a fundoshi. When fighting seriously, she dons chain mail. A 38-year-old Jujitsu master, and the first master to train Kenichi. He is an old friend of Miu's father, Saiga. Despite his apparent fragility, he is immensely strong and capable, and can easily interpret other characters' unspoken thoughts. Additionally he has mastered calligraphy, painting, pottery, and sculpting, and builds contraptions as both training devices for Kenichi and power sources for the dojo, including a treadmill generator. He also owns an orthopedic clinic and can reset bones with ease. He has proved to be a good trauma surgeon also, and speaks Russian fluently. A 42-year-old master of Chinese Kenpō. He is short, balding, and always wears a hat. He has been training in martial arts since he was very young and was the leader of a large martial arts alliance in China, which has 10,000 followers, which he left behind. He has a wife and three children in China. Kenichi has absolute trust in Ma and has stated that he has never questioned his convictions as a martial artist. A member of the Newspaper Club at Kenichi's school and has a broad range of expertise, including stealth, lock picking, tinkering, programming, and blackmailing. He retreats from most physical danger; but is also a skilled tactician. Media Manga Syun Matsuena first serialized a manga titled , which ran for 28 chapters in Shogakukan's monthly magazine Shōnen Sunday Super from 1999 to 2002, with its chapters collected in five tankōbon volumes, released from September 18, 2000, to April 18, 2002. Matsuena would later release the remake, Shijō Saikyō no Deshi Ken'ichi, which started in Shogakukan's Weekly Shōnen Sunday on April 17, 2002. The manga finished after 12 years of publication in the magazine on September 13, 2014. Shogakukan collected the chapters into sixty-one tankōbon volumes, published under the Shōnen Sunday Comics imprint, from August 9, 2002, to February 18, 2015. The series has been licensed in France by Kurokawa and in Italy by Panini Comics. A gaiden volume was released by Shogakukan on September 18, 2007. A spin-off series, titled was serialized in Shōnen Sunday S in 2012 and collected in a volume by Shogakukan on September 18, 2012.<ref></p></ref> An official guidebook was released by Shogakukan