[4] In the second volume, the series is revealed to be set in the same continuity as Momoko's 2021 Demon Days anthology the "Momoko-verse", with Kanon Sainouchi being a descendant of Sai.

She can manifest a psionic exoskeleton, a power that awakens in traumatic circumstances regarding Shinobu Kageyama and his Shadow King form.

Maester tells the Children of the Atom that it's time to step out of the shadows as Noriko Ashida secretly live-streams the event.

Protests erupt over the mutants on the streets as Maester tells the Children of the Atom that they will show the people who is superior.

Nico Minoru and Mori later sneak into Natsu's room and found what appears to be a bullet hole in one of the doors.

After a chat with Mei where she mentioned encountering some members of the Children of the Atom, Hisako visits the temple behind Kirigawa Minami Middle School where she meets Kanon Sainouchi who states that she is the descendant of Sai.

Mei Igarashi meets some members of the Children of the Atom while wearing a mask and takes the name Maystorm as Shinobu Kageyama's Shadow King form appears and starts taunting them as some mysterious obscured people show up.

[8] Chase Magnett from ComicBook.com points out that the comic has little relation with the broader narrative of the Ultimate Universe, the usual X-Men tropes, or even the superhero genre.

He considers that, by doing so, Momoko focuses instead on the core theme of the X-Men, that of people feeling lonely in a world that fears them.