Toshio speculates to Seishin about how the vampires attack and drink the victim 's blood , and how they may use a type of narcotic to prevent them from speaking out .
Seishin accompanies Toshio in the clinic at night to spot for any vampires who may attack Setsuko .
Toshio speculates to Seishin about how the vampires attack and drink the victim 's blood , and how vampires may use a type of narcotic to prevent vampires from speaking out .
Seishin accompanies Toshio in the clinic at night to spot for any vampires who may attack Setsuko .