The very best sushi experience I got was from Japan.
After arriving in Harajuku and unpacked, we were famished. Went out looking for a bite and we saw a nice place packed full of locals. Literally had to wait 5 minutes for seats. We were the only tourists there and there was no English menu. Lucky one of the staff could speak a little English. We didn't know what we ordered but when it came out, it looked like this.

The way they have their sashimi is incredible. It was in big chunks, I almost choked in one. The 2 locals sitting next to us had a bit of a laugh. They smiled at us and signaled me to proceed eating and to take my time.

It was definitely the freshest Sashimi I had ever eaten. Can't wait to go back there this October. Yes!