Erio Towa is a mysterious and eccentric character from the anime series 'Denpa Onna to Seishun Otoko'. She is the cousin of the protagonist, Makoto Niwa, and is known for her peculiar behavior, often wrapping herself in a futon, believing herself to be an alien. Erio’s odd demeanor and claims about extraterrestrial life make her a central figure in the series, exploring themes of adolescence, identity, and belonging. Her character development is pivotal as she gradually opens up and integrates with society, influenced by her interactions with Makoto and other characters.