Japanese Mystery Kanji / Radical

I'm trying to improve my reading and grammar skills by playing the JP version of Animal Crossing: Wild World, and I've come across a kanji I can't find anywhere. I've tried using the IME pad and the kanji by radicals search on Jisho.org, but neither turns up anything that looks like it. The closest I can find is 戸, but it should have a vertical line going through the top horizontal line and down to the bottom horizontal line of the square. Does anyone have any idea what it is?

Here, I drew it in paint. Best I can do.

http://i.imgur.com/Btw5F.png

Like I said, that's what it LOOKS like, considering how small the font is.