The motto of Nemuro Hanamaru is that "the lifeline of Hanamaru is its degree of freshness" (花まるの生命線は鮮度だ, Hanamaru no seimeisen ha sendo da). The basic idea is to be a restaurant where the sashimi (刺身) and sushi (寿司) are not allowed to go bad, because they are both the ingredients and the dish itself. If you think about it, sushi is simply the combination of rice and dish. And yet, to say that "sushi is just sushi" is not an easy thing. Many different shops can offer the same type of sushi made with the same ingredients of rice and fish, and yet, the "deliciousness" of it remains very different. And if you look at the ingredients, the innate deliciousness of the fish comes from its freshness.
And so to Nemuro Hanamaru, freshness is something that they cannot lose to anyone else. Fish that loses is freshness loses its tastiness. And so one of the things they focus on is that sushi isn't a "cuisine that you make the ingredients delicious" (おいしくする料理, oishikusuru ryōri), it is a "cuisine that you don't let the ingredients lose their deliciousness" (まずくさせない料理, mazukusasenai ryōri). And to not let the ingredients lose their deliciousness, the first thing you have to do is "maintain the freshness" (鮮度を維持すること, sendo wo ichi suru koto). No matter what cooking technique you use, you cannot hide the true nature of the ingredients that you use.
In order to bring the liveliness of Nemuro to its restaurants, open kitchens are also a key component of the restaurant. Beyond just the sushi conveyor belts, chefs are located in the center of the restaurant so that customer can see as much of the cooking process as possible, including the preparation of the fish, the cooking of the rice, the frying of the food, the cutting of the sashimi and more. To them, eating is more than just the taste, the anticipation and excitement that you get from seeing the chefs work on the food improve the taste. But also, its cause as a staff, they enjoy their work, and its something they just want to show off in an open kitchen. The restaurants are also decorated with a wide variety of fishing equipment, and designs reminiscent of a small restaurant in Nemuro.
Beyond just good customer service, Nemuro Hanamaru hopes that customers can feel the spirit and teamwork between the staff. Orders and replies are all shouted out in unison to create a strong sense of camaraderie and energy within the shop, and it should go beyond just a simple "yes", but a strong "hai yo!" (lit. "got it!") to bring a sense of fun to the shop.