Kasumi Iwato is a third-year student at Eisui Girls' High School in Kagoshima Prefecture and a supporting character in the manga "Saki". She and the other members of Eisui's team are shrine maidens; she belongs to a branch family of the maidens' lineage.
Kasumi's abilities stem from her close relationship with Komaki. Since she couldn't be the vessel for all nine of her goddess spirits, Kasumi being her closest blood relative had to be the vessel for one of them. With the goddess spirit, Kasumi can randomlly collect one type of suit for each round. However she can not switch back to her usual style until she is purified. According to Kyouko Suehara, Kasumi likes to play a defensive game.