I"s Cosplay Costumes (アイズ Aizu?) is a Japanese manga series written and illustrated by Masakazu Katsura. The story's main character is 16-year-old high school student Ichitaka Seto who is in love with his classmate Iori Yoshizuki, but too shy to tell her. Again and again he plans to tell her his true feelings, but each time something (usually a misunderstanding of some kind) gets in the way. Things become even more complicated when Itsuki Akiba returns to Japan; she is a girl Ichitaka was friends with in their childhood before she moved to the United States, and who had a huge crush on him.
Originally serialized in Weekly Shōnen Jump in Japan from 1997 to 2000, the series was collected into 15 tankōbon volumes by Shueisha. It was adapted into a two-episode original video animation, titled From I"s, in 2002, and a six-part OVA, called I"s Pure, which was released in 2005 and 2006. The manga and both OVAs were licensed in North America by Viz Media. The manga was released from April 2005 to September 2007, while the OVAs were released as a box-set on March 24, 2009.