These are just How I imagine them to look. You can think of them however you want. (The names are random)
(» And yes there is an age gap, but I'll make sure to only make them get together when she is Atleast 18.)
Also this is for me to imagine the characters cause I don't really have a story in mind yet.
Ryuto Nakashima (Astronomer, 24)
Sayoko Ishimori (High school student, 16)
Sayoko's mother Akari (nurse, 41)
Sayoko's father Shota (doctor, 43)
Sayoko's younger sister Yuina (middle school student, 13)
When I make up more characters, I'll be sure to update this.