Once a human, he is now an ayakashi in human skin. Can produce swords from his body. His agility, pace and acceleration is the highest among kokuboro member. Also the fastest character in Kekkaishi.   ~!  Was killed by Yoshimori in revenge for the death of Gen Shishio.  !~  Source: Wikipedia

Yoshimori Sumimura is a 14-year-old student at Karasumori School. Following in the tradition that's come down through the generations, he is the twenty-second Kekkaishi of the Sumimura clan. But he’s constantly fighting with his rival, Tokine Yukimura—his childhood friend and also a Kekkaishi—about who is the rightful heir to the magical barrier arts. Protecting people from danger while growing stronger himself, Yoshimori will battle the forces of evil again tonight!<br><br>(Source: Crunchyroll)

Troy Baker is an American actor and voice actor who works with anime films, television series, as well as video games. 

Before pursuing acting, Baker was the lead singer and rhythm guitarist for the indie-rock band Tripp Fontaine, which released the radio single "Burning Out" from their debut album "Random Thoughts On A Paper Napkin" in 2003.  

He is best known for his video game roles, including Joel Miller in The Last of Us franchise, Booker DeWitt in BioShock Infinite. His voice can also be heard in video game titles including Tales of Vesperia, Brothers in Arms, Red Faction: Guerrilla, Call of Duty: Modern Warfare 2, Final Fantasy XIII, Transformers: War for Cybertron, Call of Duty: Black Ops, Catherine, Batman: Arkham City, and Saints Row: The Third.

Animation lovers will recognize him in shows such as Cartoon Network's Generator Rex and Disney XD's Avengers: Earth's Mightiest Heroes, as well as several popular anime series such as Naruto: Shippuden and Trinity Blood.

By night, junior high student Yoshimori Sumimura is a "kekkaishi"--a demon-hunter who specializes in creating magical barriers around his prey. By day, Yoshimori's got some other demons to battle: an addiction to sweets and a seriously crotchety grandfather! Yoshimori's pretty 16-year-old neighbor and childhood friend, Tokine Yukimura, is also a kekkaishi, but their families are feuding over who is the true practitioner of the art.
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(Source: Viz Media)

Kaguro