Satake Shopping Arcade (佐竹商店街) — Taito 佐竹商店街
In the second season of the drama it is the street where a fortune-teller reads Kotaro's face, in episodes 7 and 8.
One of the oldest covered shopping arcades in Japan (its origins go back to 1898), between Okachimachi and Iriya. It is the series' second shotengai, alongside Joyfull Minowa, which is on the map about 3 km away.
Tokyo
Naka-okachimachi, Shin-okachimachi, Okachimachi
Kotaro Lives Alone
In the second season of the drama it is the street where a fortune-teller reads Kotaro's face, in episodes 7 and 8.
All the places from Kotaro Lives Alone
https://theanimetrip.com/luoghi/galleria-commerciale-satake-taito