I went to all-you-can-eat natto at "Natto Kobo Sendaiya" where you can enjoy "natto" to your heart's content
I got the information that natto lovers can't miss "It seems that there is an all-you-can-eat natto lunch where you can enjoy natto to your heart's content" and went to "Natto Kobo Sendai-ya" in Ikejiri Ohashi.