Edzumiya - The local restaurant that has awesome fresh Japanese food. I went here often and even though the owners and waiters didn't directly say they knew me, they stopped bringing me the "English Menu" after going there twice so I knew they knew what was up.
Heated toilet seats - seriously, there's nothing better. At first you're like "eeeew, it feels like someone was just sitting here." You slowly get used to it and after a you finally get used to the seat and don't really notice it's heated, you'll sit on an unheated seat and say aloud "This feels like I'm sitting on broken glass or something... where's that heated seat???"
Good fruit and vegetables - Even though the prices were pretty ridiculous at times (seriously, who pays 30 dollars for a watermelon?) the fruit was good 99.999% of the time. It was amazing. At the end of the year the famous Yairo Watermelon came in season. This watermelon... is crazy. It's not one of those square or heart-shaped ones... but it's insanely good. The best watermelon I've ever had.
Other things I'll miss...
Trains that come right on time
Being able to see mountains all around me
The snow (Even though the winter was rough, the snow was beautiful... )
Japanese pumpkin (it's plain old fashioned delicious)
Great TV commercials
Yummy - The local place with all the crazy flavored ice cream/gelato/sherbet. I'm convinced it's the best ice cream/gelato/sherbet place in all of the world.
Festivals - The naked man shoving festival was awesome.
most of all
My students. I love my students. Even the ones with the bad attitudes who hated my class, they cracked me up, I loved giving them a hard time. I'll really really miss them the most. There were some great teachers I worked with but the students still really pull ahead by being awesome.