Nobunaga actually thinks about this a little bit. And ducks his head under the water again. Then shakes it out like a dog when he resurfaces. Maybe he's a little empath too? Or reflects the people around him. Probably that, if he REALLY thinks about it.

Where was he mentally?

Right. Cooled off.

"Yes," a firm nod. And then an evil demon king smirk. "But don't expect an apology or gratitude for it." You brought this upon yourself too! If you order him to stop thinking about sexy Klaus, of course he's going to purposely do it more, what kind of Demon King (brat) would he be otherwise?