Ruri Sora no Kotori's sequel, contains 4 new episodes with different stories. Each one of them continues from a different ending you could reach in "Ruri Sora no Kotori" and tells us how Noelle lives with the man she chose.

You have to choose which story you want to play at the title page of the novel, and when it ends, you return to the title again, and can choose another one and so on.