Jerry's reminder was indeed rather abstract.
But precisely because it was so abstract, Umaru, being the sort who lived for entertainment, actually guessed whether the so-called "imprisoned teacher" had said something like that before Sukuna instantly killed him.
Unable to guess at all, Shinomiya Kaguya timely checked in with Tsukimi Eiko, who seemed to have suffered quite a blow.
"Although the rule that the Reverse Side World must not interfere with the Front World is a rule over there, expecting a monster that lived a thousand years ago to obey modern rules really is a bit unreasonable."
"Right now, aside from You Know Who, no one knows what exactly will happen in the Shibuya Incident or how great a crisis it will ultimately cause. So everyone should indeed be as careful as possible before then."
This matter was far too significant. Even Shinomiya Kaguya had no real confidence, much less any way to seal off Shibuya at the end of October—what if, after she used all kinds of resources to lock down Shibuya, Ryomen Sukuna ultimately chose not to revive there?
Plotlines crossing over between ordinary works would not cause any major problems, at most slightly altering the fates of ordinary people.
But this concerned the safety of the Reverse Side World, so Shinomiya Kaguya naturally had to make her judgment more cautiously.
Fortunately, they still had half a year. During that time, she and the girls in the group definitely would not remain where they were.
Even if You Know Who kept himself out of it for the sake of playing it safe, the girls might still be able to find a way to deal with Sukuna by then.
Ripple Chi Kung, Breathing Technique, Spiritual Power, sorcery... As long as she had Reading Points, she could master all these