Sasaki and Peeps Novel Volume 5 was written by Buncololi with illustrations by Kantoku.

Life in Japan is hectic as always for Sasaki. Their apartment now in ruins, his neighbor moves into the Karuizawa base, Hoshizaki winds up at the center of an irregular psychic plot, and Futarishizuka dresses up as a student! Meanwhile in the otherworld, the succession dispute takes a drastic turn as Prince Lewis launches an offensive against the Ohgen Empire. When Sasaki hears the dire contents of his plan, he and Peeps decide to infiltrate enemy territory to save Hertz. Just when will it be time to relax?