Tsubame Terashima is a supporting character in Yuki-iro no Karute. In the game, you can encounter her on specific dates when you go shopping at the store. The protagonist can become acquainted with her and, by going on multiple dates, have sex with her. However, since they don’t exchange contact information, she is a mysterious woman whom you can only meet by pure chance. Because their relationship consists solely of meeting and having sex, no ending was prepared for her.