Such a thought had already sprung to mind, and Ronald immediately asked Raphael, who was by his side,
"Raphael, is it convenient for you to be alone here?"
"I have some ideas I'd like to verify on the second floor, which may require me to be away for a while."
At the time of Ronald's inquiry, Raphael was laying on a maid with his ear quietly pressed against her chest, listening intently. Faced with such a question from Ronald, he simply waved his hand in response,
"Go ahead, I'll be fine here alone."
After he spoke, perhaps feeling that his words were too absolute, Raphael added,
"Actually, even if there were problems, I reckon I could handle them by myself."
"At least, that's the case for now."
"Alright." Hearing Raphael's reply, Ronald nodded, then pulled a swathe of the black fog guarding the surrounding rooms to cover his hands.
He turned and walked towards the staircase, heading to the second floor of the house on his own.