@RosaViola they didnt know about him contracting way weaker beings without them becoming a slave until shiki and shiki only could semi handle it, because he was undead
@timeh Shiki would without makoto holding back be absorbed and they only get shiki up the the lvl of control after cheating. @rosaviola ema would just get absorberd she is no where strong enough to form a contract even with cheating.
That woman's corpse must have scattered in between the realms/dimensions. The mist, I assume, is a form of the gateway only Tomoe or gods can create. That's also why Tomoe knows about 'grants'.