Rice Sandwich Tuna

cooked rice 69% [rice, water, rice vinegar, sugar, cooking salt, trehalose, sunflower oil], tuna (striped-bellied bonito, katsuwonus pelamis) cooked (with sunflower oil, cooking salt) 15%, mayonnaise [sunflower oil, pasteurized egg yolk (ground-raised), mustard, water, table vinegar, iodized cooking salt, condiment (with soy), aroma, acidifier: citric acid] , edamame (soy beans) (with cooking salt), dehydrated seaweed (nori), chives, lemon juice from concentrate (with preservative: potassium disulfite), black pepper,