Beware of the Villainess Brother

John Casper is a worker in a high but corrupt business company then one day he woke up to find out that he been reincarnated as the brother of the vicious villainess named Raphael Sara Stuart.

"'Male lead?"
"Heh-"
"They just a bunch of weak and annoying idiots and a bunch of scumbags who abandoned their fiances!"
"Female Interest?"
"She is just an idiot, like who would fall inlove with someone that just save you one time?!?!?"

John promise himself that he will protect and love his younger sister and he will kill anyone who crosses his way of saving his younger sister.