One of the interesting facets of the restaurant is its large fish tank. There, several fish swim around, entertaining customers and adding to the ambiance of the place. This fish tank is also where Hiro keeps the fish he serves, as one of the things he frequently does when serving fish is reach into the tank, pull out a fish, and slice it up in midair using his sharp katana. (It should be noted that such an activity would be illegal in real life due to health concerns, and that properly prepared sushi is always cleaned and refrigerated before being served.) This serves as both an act of showmanship and of skill on Hiro's part, where he shows his abilities with a katana and as a chef simultaneously.