This is an episode of Galileo in name only, since this story focuses exclusively on Utsumi Koaru, played by Shibasaki Kou. The eccentric scientist makes a cameo appearance in one scene and the final scene is on the same day as episode one of the second series, but apart from that this drama has little to do with the rest of the Galileo canon.
as Kaoru Utsumi
as Manabu Yukawa
as Kenichi Jonen
as Kento Touma
as Misa Kishitani
as Shumpei Kusanagi
as Shiro Yuge
as Soichiro Takubo
as Akio Komoto
as Chikako Iwami
as Yoriko Takasaki
as Ikuo Sekioka
as Mitsuyuki Takiyama
as Masaaki Mamiya
as Tatara
as Minoru Otagawa
as Hiromi Kuribayashi
as Tatsuya Unohara
as Horiguchi