Watch anime online stream anime episodes for free you are watching Kekkaishi episode 21 English Subbed online for free. Anime Episode guide, Kekkaishi episode 21 English Subbed 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.