from prolonged exposure to radiation from his many EVA missions. Gigalt only appears in the anime. Gigalt has a habit of bestowing nicknames on work partners, including Hachimaki's nickname of 'Hachi', which is the only one which stuck. The last two nicknames he bestows are 'Angel' to Ai Tanabe, and 'Artemis' to Nono while she keeps him company at Tranquility City Hospital. A veteran astronaut who is in love with outer space. He attempts suicide when his leukemia threatens his ability to go into space. He was Gigalt's EVA instructor. Hachimaki's younger brother, currently a high school student on Earth and an amateur rocket maker. Kyutaro considers Hachimaki an "insincere astronaut", and any conversation between the two almost always degenerates into a brawl. Kyutaro hopes to eventually become an engineer to design larger and more powerful rockets. A twelve-year-old girl who, along with three other children, is a "Lunarian", born and has lived her whole life on the Moon. Due to the effects of lower gravity, she's grown to be very tall and appears to be twice her age. Her physiology is always examined as part of a study on the effect of being born and raised on the Moon. Once the study is finished, she wishes to visit the Earth and swim in the ocean, although she also states she doesn't want to live there because she considers the Moon to be her home. Gigalt bestows on her a very poetic and affectionate nickname of 'Artemis' as she keeps him company. References Planetes Planetes