Yanaka Ginza and Yuyake Dandan 谷中銀座

It grew up on its own in 1945: the stairway takes its name from the sun framed in it in the evening.

Shopping street in Yanaka, in Taitō: about sixty shops and eateries, as they have been since the Fifties, and one of the ‘thirty landscapes of memory’ chosen by the ward office. The 夕やけだんだん (‘the sunset steps’) is the stairway that leads down into it from the Nippori side, and takes its name from the sun framed in it in the evening.

Tokyo

Nippori, Nishi-Nippori

Sakamoto Days

The Yanaka shotengai, with the Yuyake Dandan stairway (‘the sunset steps’) leading down into it, is the real face of the working-class neighbourhood where Sakamoto runs his shop: in the anime's opening sequence it is the stairway Lu sits on. The author Yūto Suzuki has said, however, that he does not work from a single model but combines landscapes he has seen: the reference is to the atmosphere of the low-lying neighbourhoods of Tokyo, Saitama and Chiba between the Eighties and the early Nineties, rather than to a specific street.

All the places from Sakamoto Days

https://theanimetrip.com/luoghi/yanaka-ginza-e-yuyake-dandan