Sumeba Miyako no Cosmos-sou SP Natsuyasumi de Dokkoi

is the first special volume and fifth overall volume of the Dokkoida?! light novel series, written by Taro Achi and Illustrated by Sumi Miya and Yu Yagami. It was released under the Dengeki Bunko Imprint in February 2001.

Synopsis
I thought it was completed, but it appeared again Dokkoida! The long-awaited festival project for Cosmos-so fans has finally come true! Comic 47P drawn by Yu Yagami is recorded at the beginning of the library! Includes two short stories written by Taro Achi! Achi & Yagami LOL talk 16P! Includes a complete list of Cosmos-so characters that can only be seen here! I have to buy it !!

(source: Bookwalker JP - Translated)