Never give up. It's going to be hectic but rewarding as well. The best part is when you see an improvement in yourself after all the hard work.
One odd thing for me was that I expected classrooms in Japan to be techno-friendly smart classrooms but to my surprise, a lot of places, including Shane, don't prefer it.
In Tokyo, the small cozy apartments are waiting for you! You come here to experience the greenery and beautiful Japan but when you look out of your windows, you can see a labyrinth of buildings.
If you are a no-fuss public transport person, the metro connectivity and frequency here is amazing; it's affordable and punctual.
You don't have to fret about food choices in Tokyo as there are innumerable pocket-friendly restaurants from vegan to Halal.
The last one (and the world knows about it¬) is language. Be ready with a few Japanese greeting words; trust me you will need it. A culture of 'formals' and 'no tattoos' is not compulsory. However, I personally advise that if you are teaching an aged Japanese person, you should probably keep your tattoos hidden under your formal shirt.
I did an approximately four-week course and honestly, it did make me go breathless at times. It drives you to push all your inhibitions aside, reflect on your own practices, and keep giving your best.
During the course, you have one day of conducting classes and the other to observe your peers. The formal ones are scary and the latter ones were my comfort days. Be ready to keep one day out of your lovely weekend for laundry, sleeping, going out, and the other to complete your Journals
Coming from India, I should probably say "no water" in toilets but Japanese super techno-savvy toilets helped me flush all of my inhibitions away. Kidding!
The language barrier and limited social life, which I'm still working on by trying to learn Japanese, has been my biggest fear. After joining University, I found people who talk in English, and so the network grew.
Mostly, Japanese people are extremely helpful. They will go out of their way to help you out even when they think you speak 'gibberish'.
As hay fever and pollen allergies are usual in Japan and I'm asthmatic, this did trouble me for a while. I think my medical insurance took care of it, though.
The 'top-down' approach at traditional Japanese workplaces would be my biggest fear, and fortunately, I have yet not experienced it.