-shima
Tsukishima is a station on the Yurakucho Line, and is also this character's last name.Ooedo Express Mail
This is the name of a particular doujin music circle. Their website can be found at http://www.ooedo.jp/index.html.Shin-Kiba 436
Shin-Kiba is a Terminal station on the Tokyo Metro's Yurakucho Line, which this girl personifies.