Ultra Kaiju Humanization Project Feat. POP Comic Code manga volume 4 features character designs by POP, and story and art by Shun Kazakami.

After their plan to become J-pop idols falls through, Mefilas and the other Kaiju Girls return to the Kaiju Graveyard…only to find it under attack! Alien Baltan is on the scene and is determined to take over the Kaiju Graveyard! Are the Kaiju Girls strong enough to stop her?!