He is cold and indifferent to everything, whether it is people or things, or even himself.
Because of this, when he woke up and found himself in a completely unfamiliar world with a completely unfamiliar body, he quickly accepted it after a brief surprise.
Start a new life in a new world? It sounds interesting.
With this thought in mind, he put on his customary disguise, stepped out of his room, and said hello to the girl working downstairs with a clean and hearty smile on his face.
"Hey sis, good morning."