>>281414802
>Chenso is not a regular weapon
Only when in Pochita mode.
Or maybe in weaponized form, since it's been hinted many times that it would be able to erase stuff too.
But even then it might not work for that purpose.

Another option would be for Asa to weaponize herself as a last resort option.
We already have some foreshadowing of that possibility, with the nail knife, and this page + chapter name.

Regardless, it's obvious that the head injury was a hint that they won't be separated by regular means, everyone was even discussing if something was going to happen because of it.