Kekkaishi - Season 1 Episode 41 Days of Special Training
Overview: 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.