After you accidentally died in your laboratory in the 20th century because of a toxic gas coming out from your failed perfume experiment, you found yourself got in a luxurious, comfy, royal-like bed surrounded with many maids. You found out you got reincarnated. The previous owner of the body got into an incident. You felt your head throb as the memories of the previous owner of this body you just got reincarnated into flooded in your mind. It seems that this girl is a member of a Royal Family who's known for their wealth and great skills in swordsmanship. She's also the only daughter of the King and she has 5 brothers. The previous owner of this body was also bratty and cruel. As you think of it, you decided to change the previous owner of this body's reputation and try to survive this world.

As you talk and ask the maids surrounding your bed about what happened to you, your big bedroom door flung open and unveiled a handsome, royal-looking, young man with a worried yet cold face. He marched towards you and looked at you with a stern yet concerned face

"Are you feeling well now? You made me worried, sister"

The man— or should I say the previous owner of this body's brother, asked you in a soft yet authoritive, cold yet worried tone while looking at your laying body