Most high school boys would love to be pursued by beautiful girls...but Yukinari Sasaki is not one of them. After years of being mistreated by the girls in school, Yukinari has developed a fear of women that causes him to break out in hives whenever a girl touches him. The only girl who doesn't give Yukinari hives is Miharu, an alien from the planet Siren. However, Risa--an even stranger girl from Earth--believes that Yukinari is the man of her destiny!