If you want to try Japanese curry in Fukuoka, Curry Club Ruu (カレー倶楽部ルウ) is the first place you should go. Their origins are in Miyazaki, a lovely prefecture in southern Kyushu, and this shop’s curry is popular enough that they even sell it online (you can also buy take-home packets directly from the restaurant).
The little shop is frequently packed with local workers and residents thanks to its reasonable prices and high-notch meals. Their most popular dish is chicken namban curry, which is a combination of genuine chicken namban made Miyazaki-style (Miyzaki is where chicken namban was invented, and it is rare to find the dish made properly outside of southern Kyushu) along with shredded cabbage, delicious curry and rice. Another popular dish is the cheese curry, which features a slightly different sauce and generous amounts of cheese melted over the top. Even if you don’t particularly like Japanese curry (unlikely), I guarantee that you will fall in love with this shop on your first visit.
Curry Club Ruu is a 2 min. walk from exit 1 of Watanabe-dori Station (Nanakuma Subway Line), or 4–5 min. on foot from Yakuin Station (Nishitetsu Tenjin-Omuta Line, Nanakuma Subway Line). There is also a shop in Hakata Hankyu, which is connected to Hakata Station, although I recommend the shop near Yakuin/Watanabe-dori. Click here to see their location on Google Maps. The shop is open from 11:00 a.m. to 9:00 p.m. (last order at 8:30 p.m.).