Nahida often calls herself weak. Not just the weakest Archon, but even weak among ordinary mortals. Yet even she doesn’t fully realize how powerful she truly is, with her access to Irminsul. Seriously, the entire world of Teyvat remains intact and hasn’t collapsed into a space-time pretzel only because the Dendro Archon remains wise. Though… accidents do happen.
For saving all of Sumeru and freeing Nahida from her imprisonment, Nahida promised to help Lumine in her search for her brother. Of course, somehow, even Irminsul itself holds no knowledge of the twins. But Nahida at least tried to uncover the reason for this, studying the problem at its very core. Starting with Lumine, recording everything about her—from eye color to food preferences—every parameter was written down there.
That’s why it’s so important not to distract the Archon of Wisdom during such moments… or else unforeseen changes might occur. Because Nahida’s influence through Irminsul is so vast that even she cannot fully restrain or comprehend this power. It is a power so immense that it becomes, quite literally, unusable.