Also known as: 瀬川泉
A supporting character from Hayate No Gotoku!
Class Representative for Ayasaki Hayate's class and part of a trio of proud school underachievers, together with classmates Asakaze Risa and Hanabishi Miki, who hang around with Katsura Yukiji. Izumi is the daughter of the president of a large manufacturing company, and is frequently the butt of pranks from Risa and Miki. She's also the girl closest to Hayate among the trio.