Tatsuya
A popular Hakata tonkotsu ramen shop near Naruse Station. Google rating 4.2 with 488 reviews. Parking available, good car access. Open until midnight, serving local late-night demand. One other location in Yokohama (2 total, not a national chain).
Praised for authentic Hakata-style tonkotsu available locally. The kaedama extra noodles get high marks. Open until midnight is a major plus. Yahoo Maps 4.06 with 34 reviews. Stable local regulars.