Sebastian summoned a bunch of servants to make a tub of hot water. And while he undressed her from her pale gown, frustrated by the intricacy of the attire, he didn't realize another man was following him there.
The moment Sebastian undressed the princess, Kai came to his sense. He turned away and froze. What was happening to him? That woman was his master and his master's wife!
He walked away without turning back, trying to forget his brainlessness just a moment ago.
It was good that Sebastian didn't even see him coming and going. The man was still there, pulling the string of her corset off, almost ripping them apart.
When he saw the hot water was done being prepared, he lost his patience and ripped her corset right then and there. He carried her limp body toward the hot tub, putting his arm first before her.
The temperature was perfect, and he put her inside gently after yelling at the servant to go away.