Junta's childhood friend and schoolmate, and, except for two instances, the only girl who doesn't bring about an allergic reaction in him. She is also the only girl immune to the Mega-Playboy's ability to seduce women, something Karin considers a key part in the plan to stop the Mega-Playboy. If Junta and Ami stay together, she can nullify the Mega-Playboy's charms and the future won't be overcrowded.
