A samurai from Suruga came to Edo at the fall of the shogunate and started frying tempura from a street stall; by 1870 his family had a shophouse in Asakusa, and they are still there — burned down twice by earthquake and war, rebuilt twice, five generations in. Kafū Nagai wrote the place into his novels; Shōtarō Ikenami was brought here as a boy by his grandfather. Behind the storefront hides what almost no passerby suspects: a courtyard koi pond ringed by sukiya-style private rooms.
What you eat
Edo-style tempura fried in sesame oil, served in the house's Wajima lacquer boxes. The legend is the Raijin-age — "thunder-god fritter," a dome of shiba shrimp and scallop named for the drum of the Kaminarimon gate, its frying technique passed to one heir per generation and never written down. Order it as the centerpiece of a garden-room course, or over rice at the everyday tables.
The Noren View
Asakusa's main drag is a gauntlet of tourist tempura; Nakasei is the original article hiding forty meters away. The move is the private room: for the price of a mid-range Tokyo dinner you get a pond, a garden, and a dish with a 150-year-old secret. This is where we send guests who want Sensō-ji's neighborhood at its dignified best.
Who should go
Asakusa day-trippers upgrading their lunch; literature lovers following Kafū's Tokyo; families marking an occasion — the house has welcomed children's celebrations for generations.