Ten'notsurugi: Mythos, Jinsei no Sāberu) Astrum Sword: Mythos, Vita Saber
Rank: N/A
Type: Weapon
Range: N/A
Chakra Cost: N/A
Damage: +20 to Kenjutsu and Command Arts
Description: "The Blade of Heaven...Mythos the Life Sabre. One of the Ten Shinning Weapons." When Keotsu returned to the known continent from his journey to regions unknown, he returned with his blade Mythos in a new form; some secret event took place which reconfigured the blade and created a powerful connection between Keotsu and the sword. The Mythril blade retained its ability to change it's shape, but not it's mass when subjected to Keotsu's chakras, as did the scabbard of the weapon, though the two were no longer explicitly linked. A few improvements were noted by Keotsu, though: the blade seemed to resonate better than before, boosting his powers in battle: offensive Kenjutsu techniques and Command Arts have their power increased by +20, and defensive and supplementary Kenjutsu and Command Arts are increased in their effectiveness by +20 (that is, a defensive technique that is A-rank (60 damage) would be capable of now defending from an S-rank (80 damage) ; second, the blade came to reject energies that were foreign to Keotsu - that's to say, for example, if an enemy tried to use Nagashi after grabbing the blade, the energy would stop completely due to the nature of the blade's composition. This particular power comes about from the blade's new found synergy with Keotsu, in an effort to prevent it from being used against him. Retaining all the properties of the metal it was forged from, Mythos is indestructible and will never dull, in any of its forms.
*The user can manipulate the blade’s form during battle at any time, but it costs 35 chakra to do so, and also counts towards one of that turn’s three allotted moves.
*Can only be wielded by Keotsu. When someone else tries to hold the blade, it will reject their chakra and increase its density exponentially, making it to heavy to be lifted. However, it reverts to its original density when Keotsu is holding it.
*While the sword can transform into different types of weapons, like a katana or spear, it is bound by its mass, meaning that the form it takes on has to be within the realms of creating from the same amount of matter.
*While Mythos is in hand, Keotsu is unable to cast Genjutsu at all.
(Ani) Brother
Type: Supplementary
Rank: N/A
Range: N/A
Chakra Cost: N/A
Damage: N/A
Description: Keotsu's legendary blade Mythos has been with him through trials and tribulations of all sorts; and in turn, Keotsu has used his strength to help his friends through their own challenges. The strength Keotsu could offer was always limited, though, as so many of his teachings were made with his own blade in mind. This technique allows others to use Mythos, when they normally could not. Because Mythos is tied to Keotsu's soul, he will perform a small ritual with one that Keotsu is incredibly close to: Keotsu will place Mythos in its entirety atop one of his brothers-in-arms' weapons, and coat it in an incredibly thin layer of the Mythril that Mythos is made of. In this action, Keotsu accepts this person into his soul, marking them as someone of great importance to him. This imparts the weapon with all the abilities of Mythos, except for the ability to change shape, the original ability that Mythos possessed in its form of "Mikomi", long, long ago.
*Note: Cannot be used in battle. The purpose of this technique is to allow others to be able to use Mythos.
*Note: True to the blade, if a piece of Mythos is ever used against Keotsu, this technique will "deactivate", and that person will be as if they could not have used Mythos in the first place.
*Note: Those who Keotsu teaches "Brother" will be able to use (Ten'notsurugi: Mythos, Jinsei no Sāberu) Astrum Sword: Mythos, Vita Saber with all of its abilities, except the ability to change shape.