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'm investigating the vampiric incidents
إنّي أبحث في حوادث مص الدماء
Ich untersuche die
vampirischen Zwischenfälle,
Investigar las actividades 
vampíricas de esta zona.
Investigar las actividades
vampíricas de esta zona.
J’enquête sur l’affaire du vampire
qui sévirait près d’ici.
Sto investigando sui molti casi di vampirismo
Eu estou investigando os
incidentes vampíricos.
Расследую случаи с вампиром,