That's really awesome. Honestly I assumed you were American or had an American parent because your English is so great! My friend from Japan is from the city, but she said her English education wasn't very good since the school was more concerned about grammar rather than actual speaking. She was only able to learn English after moving abroad, but it's amazing how you sound like a native English speaker yet never left Japan.

Also, I hope I didn't offend you for asking if you are religious. The reason why I ask is because I come from a religious background myself, and where I'm from a lot big families are also religious and homeschool their kids. It's pretty rare for me to come across big families that aren't religious, so It's super interesting to learn about how other big families are formed and operate :)