Y'all please remember this is a narrative from the onlookers perspective. If these comic tropes go as they normally do, the emperor is probs stuck in some form of conspiracy (and/or is being manipulated). If he's ML chances are he`s ruthless but not psycho.
Then again I could be wrong and he is crazy. But the narrative doesn't give me this vibe. It's all shown through the memories of a girl that wasn't interested and only remembers bits from second parties and never was anywhere in the social circles or near any of the key events talked about in her memories, so it's really lain on thick that she knows very little. I'm taking that's done on purpose, so there's probably alot going on that we'll find out later.