Incredibly slow service at this place. As an all you can eat place, you can assume they are disinclined to bring you all the stuff you order. They totally "forgot" half our order or happened to be "sold out" on items like salmon skin.
In case you were wondering, this place appears to be Chinese owned and/or operated, not Japanese. If you couldn't tell by the typos on the menu or the Cantonese banter among the wait staff, you can tell from the menu. They basically put mayo and teriyaki sauce with crab stick in everything. Very little available in terms of raw fish but it's definitely frozen fish thawed to room temperature. No salmon fish roe or uni, no tuna or hamachi.
I would probably stick with Kanda or Odaki.