Prelude to the main game released on January 30th 2009 by Navel!

- Three short scenarios with Watarai Asuka, Yamashina Miyako, and Hayashida Misaki as the protagonists

- Prologue of the chapters starring Shuusuke Chitose and Hayato Narita as the main characters.

- A bonus scenario featuring Karube Karuo as the main character.

The story takes place in the urban city of Yanagihara full of weird and unique people. The tale of the young boys and girls who each have worries on their mind under the colorless white sky of winter.

[From Akihabara Channel]