Matamune

Matamune (マタムネ,Matamune) is a fictional character in the Shaman King manga. Matamune, who appears in volume 19 and 20, is not in the Shaman King anime.

About
Matamune is a Nekomata, a type of cat spirit with two tails; he also carries around a pipe with him and wears a necklace with three bear claws (which is later passed on to Asakura Yoh). He has served the Asakura family for a millennia, although he spends much of his time traveling the world. He professes to have seen everything, and is almost constantly reading books. He also appears philosophical. Towards this day he still holds regrets for not being able to help his master Asakura Hao

With Onmyōdō Asakura Hao
A thousand years ago, he was just a normal cat, but he was abandoned by his mother, and his eight other siblings died. He was found and taken in by Asakura Hao (麻倉葉王, Asakura Hao, Zeke Asakura in the English Anime) who sensed the cat's strong spirit. He became Hao's faithful companion and a real friend.

When Matamune died, Hao turned Matamune's spirit into a Goryoushin, a special type of spirit employed by Onmyouji to guard against demons and other spirits that would seek to harm them. Hao also imbued Matamune with a portion of his own furyoku - a type of mana - using the Bear's Claw Necklace. This mana allowed Matamune to have a physical body, and so long as Matamune's furyoku was not used up, his physical body would continue to exist.

Going Against Hao
Matamune sided with the Asakura family to defeat Hao, who was driven mad eventually. When Hao was reborn 500 years later, Matamune teamed up with Asakura Yohken, and killed Hao in the Shaman Fight. Matamune holds himself responsible for what happened to Hao, believing that his loss of faith in Hao was part of the cause of Hao's madness. As such, Matamune has spent the last thousand years searching for a way to atone, and to save Hao.

Guiding Asakura Yoh
When Asakura Yoh went to meet Kyōyama Anna for the first time, his grandfather, Asakura Yohmei(麻倉葉明 Asakura Yōmei) summoned Matamune to accompany him. Matamune and Yoh became good friends, and Matamune taught Yoh a number of things. Matamune resolved to help Yoh save Anna - who also had the power of reishi (spirit's sight), the ability to telepathically read hearts (a power which had ultimately led to Hao's madness) - partly as an act of penance for not being able to save Hao a thousand years ago. This power of empathy drove Anna to become withdrawn and distrustful and manifested into dangerous Oni (demonic ogres).

The Oni turned on Anna, terrorizing and threatening to destroy her. Matamune gave his power to Yoh, who was then able to defeat the Oni which was terrorizing Anna. However, it used up his remaining furyoku and meant that Matamune was unable to return to his normal form. Yoh promised Matamune that one day he would become strong enough to be able to summon him once again.

Shamanic Spells

 * Chou SenjiRyakketsu FumonGoryouE (Chou·SenjiRyakketsu - Mystic Spirit Duel)
 * A technique bestowed on Matamune when he was reborn as a Goryoushin, by Hao. This technique allows Matamune to create his OverSoul (by using his pipe as the medium, he transforms it into a sword), and he uses it when he fights other spirits.

O.S. Oni Goroshi
O.S. "Oni-Goroshi" (O.S.鬼殺し) Description: This sword-shaped OS is the form of Matamune's soul in O.S. mode. Using the Ultra Senji Ryakketsu spell of Fumon Tonkou supplementary, he can extend the flow of his furyoku into his Kiseru and transform a portion of his spirit into a gigantic katana magically-imbued to ward off evil spirits. At the age 0f 10, Yoh reluctantly wielded this OS at the behest of Matamune, even though both knew doing so would deplete the remainder of Matamune's furyoku in the process. Yoh materialized the Oni-Goroshi OS through his trademark bear-talon necklace, which originally belonged to Matamune that was his anchor to the physical plane. This was also the OS that Yoh's ancestor Yohken wielded, using a Shakujo as a medium.
 * Shaman: Matamune (nekomata spirit)|Asakura Yoh (age 10)|Asakura Yohken
 * O.S. Type: Weapon Type
 * Spirit Ally: Matamune (nekomata spirit)
 * Medium used: Kiseru (Matamune) / Bear-talon necklace (Yoh) / Shakujo (Yohken)

Attacks


 * Kokusatsu (Deathblow): An attacking technique Matamune uses with his OverSoul. Matamune can increase the strength of the attack by pouring more of his furyoku into it.

Anime/Manga Difference
Matamune is a manga only character and it is therefor never explained who exactly defeated Patch Hao, nor is it explained how Yoh got the bear claw necklace.

Trivia

 * Yoh continues to wear the bear claw necklace because he one day, when he becomes strong enough, wants to use them to bring back Matamune from the spirit world.