Seafood is big in Japan. Most grocery stores are filled with different kinds of seafood in the seafood section. In most stores, seafood is sold at reasonable prices. As you can see in the images, shoppers are able to buy squid in most grocery stores. If you have never eaten squid, I recommend trying it. There are a lot recipes a available on the Internet for people who want to experience eating it. I have eating it fried, boiled, and raw. Good luck!