He is a cursed speech user, so he only speaks in sushi ingredients. 'Salmon' means 'agree', or 'affirm'. 'Bonito flakes' means 'disagree', and 'fish flakes' means 'deny'. 'Kelp' means 'greetings'. 'Mustard leaf' means 'concern', or 'worry'. 'Cod roe' means he wants to grab your attention, like, 'hey, look here'. 'Tuna' means 'focus', and 'tuna tuna' means 'look'. He talks like this to ensure that no one is accidentally hurt by his Cursed Technique. He is quiet, and often doesn't say much.