The martial arts of Leo's family, if appraised in the modern martial world, would be equivalent to secret manuals of very strong established martial organisations.
However, because it involved a weapon, its actual value in the modern age, where firearms were superior and cold weapons weren't even legalised for everyday carry, was reduced.
Leo did not care about all this, though. Just like the katana he wielded, the martial art that also represented as an heirloom for ages couldn't have its worth calculated by modern world standards or normal standards in general.
However, this was in the past. It was only a matter of time before Leo realised the importance martial art was going to have in the near future in their new reality and how this would affect his life and that of his daughter.
