"Hey! Would you believe me if I said that this was a misunderstanding and there's a very reasonable explanation for it?" Muku spoke before Freya could say or do anything.
He didn't want a situation where she would run out of the room crying while grabbing her butt. So he spoke quickly before it came to all that.
Surprisingly, as well as fortunately for him. After the initial shock, Freya didn't seem too shaken by the situation. She even nodded to what he said while looking at him. Which was basically an indirect way of saying, "Go ahead, speak. I'm listening"
"Wait... You believe me?" Muku couldn't help but ask. He wasn't expecting her to be so cooperative.
After speaking through, he mentally kicked himself. Did he want her to runway instead? Wasn't this the best result? Why would he ask something so dumb?