Days in Training
Taking Tokiko's words to heart Yoshimori decides to put aside everything to be able to train. With a few words with a shrine priest Yoshimori takes some time to train with a few local crows. After Yoshimori decides that he has done well, he has a chance to put his new found strengths to the test when Karasumori is invaded by quite a few shady characters.
Aired 06/11/2007EP 41 - Days in Training

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)