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.
I figure it's just because 
Hikari is irresponsib—
—ظننتُ أنّه لمجرّد أنّ هيكاري غير مسؤو
Letztlich wird des Pudels Kern
darin liegen, dass sie nachlä…
Seguro que es solo
que Hikari es irrespon…
Seguro que es solo
que Hikari es irrespon…
Mais là, c’est sans doute
sa faute à elle…
Suppongo sia solo perché Hikari è irresponsa—
Imagino que seja só porque ela seja irrespon—
Скорее всего, Хикари
и правда неряшливая...