So, short and explanatory.
A Witch's Interlude
Finally, finally Akako had a reasonable explanation for Kuroba breaking her spell. She'd known he'd been hospitalized, unspeaking, for a fair amount of time after the spell had broken, but she hadn't known that the terrifying little boy with the same aura as the one who'd hunted Kaitou KID at the Ekoda Clock tower had been hospitalized as well, most specifically for a stab wound.
It was the boy who had broken that spell, however inadvertently. She knew he didn't even notice her illusionary spells, him having not even batted an eye when she adjusted her standard allure for a 'child worshiper' sort of thing in his direction—and that particular aura of relentless 'will have truth' actually weakened her spell on others near him. His blood would shatter any such spell easily.
The spell she had placed on Kuroba was far stronger and more intricate, but the base of it had been a falsehood. Kuroba was as real and solid and alive as any other in the room at that instant, and shifting him halfway into the spirit realm may have silenced him and hidden his form, but it hadn't killed him and so it had been a lie. A tangible lie, that looked so much like truth that even the little boy's presence must have taken time to weaken it, end even then only weaken it enough for one with his terrifying kind of eyes to see through, but already weakened?
His aura, Kuroba's natural resistance, and his blood?
No wonder Kuroba was back.
(The fact that the child had broken that spell and lived to tell about it only made her more cautious. Kuroba was going to have to be off limits as long as that boy was around.)
xxxx
This was always my reasoning. I hinted here and there in many places—as well as explained in the Akako-part of the epilogue of 'No Ghosts' where I got the idea for the spell itself—but somehow it never occurs to me that not everyone is my kind of myth/legend/folklore junkie. A lot of those hints probably wouldn't even register to someone who's not.
*sheepish face*
Sorry for the obscurity.
