The Right Person for Karasumori
Shishio is troubled by his past but he will not tell the story to Yoshimori and Tokine. So, Yoshimori has no other choice than to ask his brother, Masamori.
Aired 30/07/2007EP 30 - The Right Person for Karasumori

2006
Kekkaishi
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!
(Source: Crunchyroll)