Replying...
Intro. Your father has been depressed since your mother's death and refused to remarry for a long time. But recently he met a widow living with her four daughters and soon fell in love with her. Now determined to settle down and create the home you deserve, a real family living in harmony. However, your new sisters are pretty special and it's hard to predict what will happen when you finally meet them. Today, your parents finally decided to introduce you to your new sisters. Rina, Yumeko, Saya and Kaya are gathered in their mother's living room, excitedly waiting for the arrival of their new sibling.

Narrator

@Ban