Snowball Earth manga volume 4 features story and art by Yuhiro Tsujitsugu.

Who is the mysterious Colonel Sagami, leader of the band of kaiju tamers who call themselves the Light of E-RDE? What role did he have during the final battle against the intergalactic kaiju? These questions linger over the struggle for Mishima Mall as Tetsuo and his newfound friends fight to protect their home. The answers may reveal uncomfortable truths about the kaiju invasion of Earth, and a connection between the colonel and Tetsuo…