The average increase is around 20 yen, with the Hand-Rolled Onigiri Tuna Mayonnaise and Hand-Rolled Onigiri Hokkaido Kombu rising by 18 yen from 178 yen to 196 yen. The Hand-Rolled Onigiri Charcoal-Grilled Red Salmon and Hand-Rolled Onigiri Spicy Cod Roe with Extra Filling will increase by 19 yen from 213 yen to 232 yen. Among bento items, the Oyakodon will rise by 51 yen from 594 yen to 645 yen.