Tsuruko is an alien from planet Ut'ulls-Hr'her who enters Earth illegally and has an obsession with Mahiro. She is a doujinshi author who writes manga about Mahiro, who has become famous in space due to Nyaruko's stories. However, she has never met him. She comes to Earth in hopes of meeting him, but always has her hopes somehow dashed at the last moment. She is a fujoshi.