Haraguchi Shoten is a seafood shop in a 100-meter arcade shopping street in Hakata, Fukuoka, selling mentaiko and other marine products. It offers Hokkaido mentaiko, yuzu squid mentaiko, mackerel mentaiko, and mentaiko snacks. The arcade has run for over 100 years and has served as a shopping spot for chefs, and chosen products can be shipped frozen. Most nearby shops close before 5 p.m. on weekdays, so fewer places remain to look around if you arrive late.