Ronan could suppress both sides at once, but he was deliberately maintaining The Other Side's "activity."
Because he needed to track it... and because the power within the dust and darkness was too ethereal, too lively. It contained extreme heat and a cutting edge like that of an engraving knife. It was closely connected to Bat Master's already mostly collapsed Form and Spirit Framework, held in some kind of suppressed resonance.
Ronan could track it, sure, but if he let that power run wild, Bat Master would resonate along with it and basically be reduced to ashes completely.
Faced with this situation, Ronan pondered for a moment.
In the past, he would have agonized over it much longer. But now, he made another call. "Your Majesty, I'd like to report the latest situation..."
He quickly described the circumstances he was facing, then asked:
Could they be cut apart... Cough. The words nearly slipped out, but he caught them in his throat and hurriedly changed to a more appropriate phrasing. "Do you have any ideas?"
The Martial Emperor laughed. "Lord Ronan, so you're deliberately looking for trouble, aren't you?"
Whether the other side could see him or not, Ronan solemnly shook his head. "If Your Majesty weren't here, I would take the risk. But now there's no need. I think Bat Master should be saved if possible... That calls for an extremely reliable plan. My knowledge is limited, after all. Without Your Majesty's help, I truly have no confidence."
The Martial Emperor could not be bothered to wrangle with him over such matters any longer and replied with a cold laugh, "Why come to me? Don't you have people under your command?"
Ronan was genuinely taken aback. "Who?"
"You've forgotten an old acquaintance so quickly?"
"Huh?"
"I mean Mary's Heart Burning