I'm sorry I did a mistake... I thought that I have to imagine which characters that I would like them to be my family, here I edited it:
Mother- Close to Eri.
Father- I don't remember any characters that seems to be like him.
Grandpa- Hiroshi Agasa.
Auntie- Yui Uehara
Second elder brother- Yusaku Kudo...
Third elder brother- Dr. Araide physically... he wears glasses... and has the same hair color and kind of messy.
Eldest sister- Akako Koizumi, she seems to be something like her. She got the same hair colour... brownish red. But different hairstyle... like Jodie or Kobayashi.
Second eldest sister- Yumi Miyamoto...
Second younger brother- Eisuke Hondou
Me… ummm… as I said, Chianti!
Just kidding, hehehe... I can't see my self in any characters.