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...
I've taken poison and tried
jumping to my death. But I can't die.
تجرعت السم وحاولت القفز
.للموت، ولكنّي لا أموت
Ich habe Gift eingenommen, wollte mich
selbst in den Tod stürzen. Alles vergebens.
Bebí veneno, salté de sitios 
altos… Pero no puedo morir.
Bebí veneno, salté de sitios altos…
Pero no puedo morir.
Prendre du poison ne sert à rien,
pas plus que sauter d’un immeuble.
Ho bevuto del veleno, mi sono gettato dall'alto.
 Ma non ci riesco proprio.
Eu tentei veneno e pular em direção
a morte, mas não consigo morrer.
Принимал яд, пытался спрыгнуть 
со здания, но так и не умер.