Kobayashi Curry, that is located just infront of JR Futsukaichi station! It is so popular that it is rare if you can go in without lining up. Silky smooth textured soup, but has a kick of spices to it! I recommend the vegetable topping! It's a must!
If you are afraid of getting your clothes dirty, you can ask the staff for an apron!
2-6-11 Chuou Futsukaichi, Tsukushino, Fukuoka