TP Bonus

TP Bonus (found on weapons such as the Martial Knife, Martial Scythe, Martial Anelace, etc. along with the Shamo and Hagun) allows a weaponskill to use 100% additional TP from what you have when the skill is actually used.

For example, using Tachi: Yukikaze at 100% TP with a Hagun (Martial Great Katana) would have the same effect as though you used it at 200% TP with a non-martial weapon.

TP Bonus weapons are primarily used to increase damage on heavily TP-dependent damaging weaponskills (e.g. Shark Bite, the final three Tachi skills, Evisceration, Savage Blade, and most of the other high-level weaponskills). It can be used on weaponskills with other modifiers (Asuran Fists for example has a TP modifier of more accuracy, Viper Bite has a TP modifier of more poison) but the extra damage from a damage TP modifier is the common use.

It does not allow the user to gain TP any faster, that's what the "Store TP" Job Trait and effect on certain items does.