I have very fond memories of Kansai airport. First time I went to Japan I ... Uhh, I didn't have a visa despite going there for exchange.
The Kansai airport immigration office uttered a lot of "oohs" and "eehs", but they came through and in less than 45 minutes my appeal for deportation was accepted and I was granted a 1 year student visa. Always makes me happy when I pass through there :)
You showed up in Japan intending to stay for a year without a visa? Bold strategy :)