Watch anime online stream anime episodes for free you are watching Kekkaishi episode 20 English Subbed online for free. Anime Episode guide, Kekkaishi episode 20 English Subbed The Ominous Spy. In order to defeat the Shirahago, Yoshimori creates a kekkai surrounding the entire ayakashi, however is unable to maintain its stability and tells Tokine to create multi-layered kekkai around his own. Knowing her skills lie not in her strength but in her accuracy, Tokine creates multiple spear-like kekkai which pierce and immobilize the Shirihago, allowing Yoshimori’s kekkai to stabilize and destroy it. Yoshimori and Tokine begin to notice the ayakashi spy whose human form has begun to fail, and Yoshimori engages in battle with the spy but he runs away into the nearby forest.