なかむら観魚店
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I think I got that tricky character right, though kangyoten isn't in any of the dictionaries I checked, despite having web results, so your mileage may vary.

Also possibly inspired by Nakamura Kangyoen: https://nakamurakangyoen.com/ ? Hard to say when I can hardly read Japanese.

Here is the source: https://1041uuu.tumblr.com/post/118852290693 And an article about the author: https://neocha.com/magazine/japan-pixelated/