is a Japanese anime television series created by Shouji Saeki and Hiroyuki Yamaga. It was animated by Gainax and Shaft. The series aired on the Tokyo Broadcasting System from April 2, 2004 to June 18, 2004, totaling 12 episodes. A manga adaptation, illustrated by Ashita Morimi, was serialized in Hakusensha's Young Animal. Plot Takeru and Ryou are high school students who work doing deliveries for the former's uncle. One night, the two go to investigate a mysterious light in the woods only to find a young girl emerging from the light. Takeru and Ryou are attacked by an alien, which is defeated when Takeru transforms into a powerful and strange-looking beast himself. The girl, whom the boys name "Hikari" (light), is taken in by Takeru when she confesses to having no memory of who she is. They are later joined by Jennifer Portman, an American scientist with an interest in the boys and Hikari; Ioneos, a shape-shifting robot loyal to Hikari; Kuon, a little floating alien; and Akari, Hikari's "sister", who also appeared just as Hikari did. The series follows the daily lives of its characters as they learn about the human condition, Hikari and Akari's alien origins, and face the incoming monsters and catastrophes. Characters Main characters Takeru Takemoto is the series' main character. He comes off as a lazy and unmotivated teenager, but is really just unsure of his place in the world. He found and named Hikari in the woods in the first episode. After finding Hikari, Takeru gains inexplicable new powers which allow him to transform into a powerful, yet primal being with incredible lethality, but has also been shown to be able to transform into something between his human and monster forms. This power is later explained to be a result of Extended Definition. Takeru eventually develops a love interest in Hikari, ultimately convincing Hikari to spare the world for their love. It is shown that he has some feelings for Mari, but only as a relative. He is obsessed with motorcycles and wanted to take Hikari on a journey throughout the country on one. A mysterious girl who 'fell from the sky', Hikari fell in love with Takeru at first sight after being found in the first episode. She is very cheerful and thinks that almost everything is beautiful. While she can not remember anything before the day Takeru found her, it is later