In the spin-off novel of the popular manga 'The 100 Girlfriends Who Really, Really, Really, Really, Really Love You,' Rentaro experiences amnesia, Nano becomes a host for an alien entity, and the entire group is transported into Shizuka's beloved book. Amidst these bizarre events, the characters find themselves operating a colossal robot, adding to the chaos. This narrative is accompanied by fresh illustrations by the talented Yukiko Nozawa.