Kekkaishi Season 2 Episode 14 Masamori's Scheme

Masamori gives Yoshimori a lecture on the application of the Kekkai and how he needs to think before he acts. That night, Masamori places a botanical Ayakashi in the Karasumori site to test both Yoshimori's skills as well as the Karasumori site's powers, only to learn both are beyond his expectations.