Soba Kousaku is a soba restaurant near Canal City in Fukuoka, serving cheonggyul soba and zaru soba with crisp tempura. After you finish the noodles, the restaurant serves sobayu and explains how to mix it into the tsuyu. The tempura set contains peppers, shiitake mushrooms, sweet potato, and cabbage, but no shrimp. The lack of shrimp makes the set feel incomplete.