An additional slot is gained at level 3. These characters often spend some of their proficiencies on the mastery of a martial arts style. They do not distinguish weapon from non-weapon proficiencies . Book rules overlook the Yakuza proficiencies. In the MyWorld campaign, an additional slot is gained at level 3, and at every odd-numbered level thereafter.
Martial arts are open to the yakuza.
There are enough time travel films out there now that most of the things which could go wrong in time have been shown on the silver screen. An eclectic collection of materials which includes RPG stories, commentary on law and Bible, song lyrics, and indices to material all over the web.