Stream anime episodes online for free, Watch Kekkaishi Episode 21 English version online and free episodes. Anime Episode guide, Chapter Kekkaishi Episode 21 English dubbed Gen Shishio the Heartless Transfer Student A new transfer student shows up and destroys a shiki disguised as Yoshimori. Yoshimori senses it and wakes up from his nap on the roof and tries to find Gen. Tokine and Yoshimori find claw marks on the wall outside along with the remains of Yoshimori’s shiki. Gen encounters Tatsumi and senses that he has special powers. He begins to interrogate him but then leaves him alone. Later at night, Tokine and Yoshimori met Gen at Karasumori.