Shio / Shoyu Ramen at 『 』in Kanda
Shoyu ramen (熟成練り醤油らーめん), with additional egg. At first, the soup is shio (salt) ramen. Then, you mix the ball to get shoyu (soy sauce) ramen.
The restaurant is actually nameless… Just a 麺 (noodle) character at the entrance.