I collapsed from overworking with a pile of documents due to the exploitation of manual labor by evil companies.

"Your highness! These documents are all stacked up...!"

I became the younger sister of an aide who is suffering from hard work because of the crown prince who resembles me in the present life?!

I can't wait and see you trying to use my brother's "good and gentle personality" to treat him however you want, even if it reminds me of myself in the past!

The operation to separate those two men started like that...

"Well it's been a long time since you've accompanied us..."

No wonder this living evil company seems to be attracted to me. Why do evil companies like me so much, both in modern times and in books?
In addition,

"If you touch my sister, I'll kill you all."

He's a nice, good-natured, gentle siscon brother...?