Lawson's "natto roll" has increased the amount of fillings at the same price! "Hosomaki Natto" is 10 pieces → 11 pieces [Natto Day] [entabe.com]
Toshi Sushi - These are Natto Roll (with added Shiso as request option) . Natto is fermented soybeans, which is also an excellent source of vitamins. Natto is a polarizing dish in
Natto Sushi: What is Natto, How to Enjoy, and Sake Pairings (2021)