Karin Koizumi

Karin Koizumi is the quarterback for the Teikoku Alexanders. She appears like a very feminine, girlish person. Her jersey number is 6. Karin was first recruited on the team after being scouted by Taka. One day, Karin was passing the football field, when Ibarada misthrew a pass, and it hit Karin's bag. Asking who she should throw it back to, Taka raised his hand. She sent the ball spiraling beautifully, with perfect accuracy, back to him. Taka immediately told Heracles and Yamato to make her join the team, even admitting that she had "pure talent." Karin had at first rejected, due to her modesty and insecurity, but then when Yamato started to talk, Karin found it difficult to resist him. She joined the team, and though the training was hard, like Sena, she grew to love American Football, and stayed with it. In the last chapter of the manga Karin is seen walking with a friend to watch a university game between Koigahama and Enma because now that she is aspiring to become a manga artist, her editor insisted on her drawing a manga with Eyeshield 21 as the main character.