If I had a billion yen...

If I had a billion yen, I would renovate my house.

My house is detached, but it's really narrow. Actually I don't have my room. There are four people in my family, but our house has only five rooms which are a dining room with a kitchen, Japanese-style room, lavatory,bathroom and nursery room. My parents don't have their room, so they sleep in the nursery room at night.

I wish there would be my room. Not only my room but also ｆather's room, mother's room and my sister's room. If I had my room, I could have my book shelf in my room, I have so many books, but I'm running short of the place to keep them now. In order to do so, I really want to renovate my house with a billion yen.