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...
He sought immortality
and ended up a yokai. Pitiful fool.
سعى للخلود وانتهى به المطاف
.كيوكاي. يا له من أحمق مسكين
Er ist auf der Suche nach Unsterblichkeit zu
einem Yōkai geworden. Ein trauriges Schicksal.
Te convertiste en yokai al desear 
la inmortalidad. Me compadezco.
Se convirtió en yokai al desear
la inmortalidad. Me compadezco.
Sa quête d’immortalité a changé
ce malheureux en esprit.
Desiderava l'immortalità 
ed è diventato uno yōkai. Poveraccio.
Ele buscava imortalidade e acabou se
tornando um Yokai. Que ferramenta de tolos.
Искал бессмертие, а в итоге стал ёкаем. 
Вот дурак.