House, Home
You need to go up on the roof and slide down seven times to make this your house. A house isn't a home until you've slid down it exactly seven times, you know.
Imagine sliding down your house from the roof all the way down to the ground. I hope you aren't afraid of heights, because you have to do this six more times.
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If you try to slide down your new house and you land on a tack (たく), that means the house has rejected you. It isn't your home now. You need to leave and find a new home.
As you slide, you close your eyes and really hope you don't end up with a tack in your butt and no home to sleep in tonight.