Lets see....
Furnace is like the little one who needs lead around, but is very determined.
Separ is like the son who is a bit naive, but is strong and moral.
Suki is like the foreign exchange student who is temporarily living with us, and trying to just seduce everyone at once.
Vis is that one son who hides in his room all day, but is really a rom-com addict- despite his rough outward appearance.
Alula is that strange, spaced out next-door neighbor girl who always somehow wanders into the house and randomly gets caught up in our vacations.
Kelvin is like a father who just wants to get done with work, and everyone safe.
Carver is the over protective mom who disaproves of the foreign exchange student.

Kronshi is the tax collector, that is all.