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.
If Onee-chan was actually 
asking for my help...
...إن كانت أختي تطلب مساعدتي بالفعل
dann hat mein Schwesterherz
tatsächlich meine Hilfe gebraucht.
Si de verdad necesitaba mi ayuda…
Si de verdad necesitaba mi ayuda…
Se davvero mia sorella
aveva bisogno del mio aiuto...
Se ela só pediu mesmo a minha
 ajuda porque precisava...
Если сестрице правда
нужна была моя помощь...