Kiwamiya Hakata Station Chikagai is in the basement of Hakata Station, on the first basement floor, visible when you turn left after coming down from Exit 2. It serves hamburg steak, ordered as S, M, or L sets, which you grill yourself on a hot stone plate. Before around 4 p.m., there are cases of entering without waiting, and orders are taken while you stand in line. After the meal, your clothes carry the smell of beef fat.