I think that I have become quite spoiled living in Tokyo for over a decade because it seems to me that the food tastes all the same. It is a casual dining experience, somewhere you would go if you are hungry but not needing to be inspired and/or impressed. The blooming onion makes a nice talk piece but make sure you have antacid in your medicine cabinet.
It has a comfy setting with dim lighting and warm decor. Many people come here to unwind with colleagues. The restaurant part offers good eats, nice char-broiled steaks and the like. The bar is encircled by stools and it will get very crowded on Friday nights so get there early if you want a place to sit down.