the 100 meter dash is eleven seconds. Supposedly Kana's older brother, he is an older man who is more or less in charge of Kana and is very protective of her. Usually he tends to be a very care-free type of person, though can sometimes be driven to be very violent, especially when Kana is concerned. She is Enomoto's colleague, who is also connected with protecting Kana at all costs. She impersonates the school nurse at Naoyuki's school in order to keep an eye on Kana, though she really does seem to have some knowledge about medicine. Also, she can be a very violent person and once brutally fought with Naoyuki after they had a talk about Kana. Mayumi Shiina is not her real name, which remains unknown; the initials of her true name, as seen in her letter to Naoyuki, is "T.S.". Naoyuki's younger sister who is in junior high school. She tends to be very loud and annoying to her older brother and does not back down easily. When Naoyuki went on a date with Kana, Yūko ended up following and spying on them, which is probably because she was interested in finding out who Kana was. After the spying, she got into a fight with Suizenji. Naoyuki's classmate, who often hangs out with him. Naoyuki's homeroom teacher. Media Light novels The light novel series of Iriya no Sora is written by Japanese author Mizuhito Akiyama and illustrated by Eeji Komatsu, also known for his work on Planetarian: The Reverie of a Little Planet. The series was four volumes in length and published by MediaWorks under their Dengeki Bunko label. Eventually, the series was nominated for the Seiun Award. The Chinese translation is published by Kadokawa Media. List of chapters Original video animation A six-episode original video animation series based on the novels was produced by the animation studio Toei Animation. The OVAs were released as six DVDs between February 25 and July 29, 2005. Five of the DVD titles are taken from the chapter titles of the novels. The OVA's opening theme was "Forever Blue" and the ending theme was "Himawari", both sung by Chihiro Imai. Episodes Video games A sound novel and card game video game for the Nintendo DS based on the series was released in Japan on January 11, 2007 by MediaWorks. A sequel named Iriya no Sora, UFO no Natsu II was released