In town, blood-sucking incidents are growing frequent. As Kitaro investigates, he receives a letter. The sender wants to be killed. Kitaro goes to visit the sender and meets Onozaki, a genetics researcher. Onozaki has created immortal cells and conducted an experiment where he injected himself with them. As a result, he has obtained an immortal body and also turned into a youkai. When he transformed into a youkai, he lost control and went seeking blood. All the recent blood-sucking incidents were Onozaki's doing. Because of the immortal cells, Onozaki can't kill himself, so he begs Kitaro to kill him, but...
Despite what I said,
I understand how that girl feels.
،على الرغم ممّا قلته
.إلّا أنّي أفهم شعور تلك الفتاة
Trotz meiner Worte kann ich
das Mädchen gut verstehen.
Pese a lo que dije, entiendo 
lo que siente esa muchacha.
Pese a lo que dije,
entiendo lo que siente esa chica.
Même si j’ai eu des mots durs,
je comprends cette jeune fille.
Benché abbia parlato così, non è che non capisca
 lo stato d'animo di quella ragazza.
Apesar do que eu disse,
ele entende os sentimentos da garota.
Что ни говори,
а я понимаю чувства девочки.