Well, I'm pretty sure Souji is only the mom for his being the only one of the above who can cook a wide variety of foods (without causing vomiting, dizziness, cramping, rectal bleeding, and the like). Otherwise, everyone else just fits the stereotypical role well.
Speaking of fathers.DadThis is my family.MomBig brotherBig sisterLittle brotherIt might be fun to be a big sister in this family.
by implicationTeach-! Let Teddie lend a hand!Speaking of mothers.In charge of shoppingLittle sisterThinking of what to make for dinnerNanako is the greatest.
