Sumeba Miyako no Cosmos-sou SSP Hisashibuti ni Dokkoi

is the second special volume and sixth 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 September 2003.

Synopsis
Hi, it's been a long time. This is Suzuo Sakurasaki. Thanks to you, I am doing Dokkoida, a transformation hero of justice that has become a TV animation. Ah, even in anime, he sank his head into the ground, and he was laughed at after all. In spite of such a thing, even a novel has been revived for the first time in a while. This time we went swimming with everyone at Cosmos Zhuang. So, I and Asaka will coach Kanazuchi's Kosuzu and Ruri, respectively, and try to compete to see which one will be able to swim, so if you lose, you'll be a cucumber with a kappa !? !! Let's go, makeover Dokkoida! Isn't it a transformation? Well, anyway, it's a gorgeous 4-piece stand.

(source: Bookwalker JP - Translated)