There's a certain type of Japanese restaurant where most of the food is small cooked dishes for reasonable prices and the menu is mostly on the wall. This is the kind of place a businessman would go to after work to drink with his co-workers, and snack while they discuss whatever. This isn't a go-to place for sushi. This isn't a formal romantic evening. You're not paying for the posh atmosphere.
Everything is well prepared, the menu (both on paper and additional items on the walls) are varied and incorporate traditional dishes and contemporary food as well. Price was very very low, and the place is packed even in the middle of the week, so arrive early or plan to wait (dunno if they have reservations.)
Personal recommendations would be the chicken gizzards, wasabi octopus, shishito skewers, and my absolute favorite would be the honey toast box is a must try too!
If you're looking for japanese food, come here. If you're looking for some good eats with a little sushi, come here. If you want a full blown 7-course sushi meal with lots of nigiri, this might not be the place for you.