Agreed - though part of that is that I'm still trying to lay it out for
myself - I could see the first, and
maybe the second, but not the third . . .?
. . . Aside from one (
very specific) gag, I don't see it coming up an
Isekai Quartet tale; mentions of his eldritch nature which largely be confined to suddenly looming menacingly in response to threats - or space warping, walls bleeding black (ink) blood, and an icy hissing, like whispers in an alien tongue (or turning pages rustling), filling the air at an ever-increasing volume and tempo . . .
And then Puck pops into view, and with a delighted cry of
"Kitty!", Galen is back to normal and utterly oblivious to everything around him.
(Or
something to that effect, anyway.)
In any case, I'm
generally just considering Galen's Foreigner abilities as a thought exercise, until or unless I actually
do the crossover . . . And
especially if I follow through with my idea for
after that.