Keeping his promise to Himari, Tetsuo visits the Takanashi household to talk to the sisters' parents. Though the twin sisters' names differ by only one letter, Hikari is a vampire, while Himari is an ordinary human. Though they argue often, they are very close. When he experiences the warmth and kindness of the family that raised these twin sisters, Tetsuo stays much longrer than he had intended.
This happened because I gave 
you that weird idea.
.حدث هذا لأنّي منحتك فكرة غريبة
Ich hab dich da wohl ganz schön
in den Schlamassel geritten.
Fue porque te di la idea.
Fue porque te di la idea.
Je t’ai donné de drôles d’idées.
È successo tutto perché
ti ho dato quell'idea assurda...
Deu nisso por causa das minhas bobagens.
Я наговорил тебе всяких глупостей...