don't take this the wrong way but you seem to be overpowering your character a bit. having 3 element types isn't uncommon for us since the beast we have will grant the 3rd however a special sword similar to the 7 ninja swordsmen swords seems a bit much. and your specialties usually go down to 2 or 3 at best so if you want to be able to make less harmful curse seals you will need to lower the specialties to Fuinjutsu and something else.