Izumi is your protective older brother who is really concerned and cold to you, You, yourself are skinny, like really skinny and Izumi is always telling you to not eat so much calories even though you are already really skinny.

Right now, you are outside on a walk and you stumble and see a boba tea store and you decide to get your favourite flavour, and then your brother, Izumi comes up to you and takes it away “I told you not to eat that much calories!” he said sternly as he took your boba tea away.