The blinding light coming out from Light dimmed slightly upon hearing Kyran's words.
True to what he said, Deception did not tell them about the new Dark Sage being at odds with the new Soul Emperor. What Deception did say was that a war was about to happen that could put the Soul Emperor's life at risk, which was why they left for the Human plane as soon as possible.
Deception also said that the mage she wanted to capture was part of the faction that threatened the Soul Emperor's life. Thus, Light and Toad had no qualms about helping her so long as they prioritized their objective.
Alas, it appeared Deception had indeed withheld such crucial information. If Light and Toad knew the mage she wanted to capture was none other than the new Dark Sage, they would not have agreed to assist her.
Light felt an incoming headache and subconsciously looked at the hole above. But then, a thought crossed Light's mind.
I noticed some confusing points in the last chapter and edited them. Sorry about that.
In case you're wondering about the Coven of the Twelve, they were introduced near the end of the Lignum plane arc :D