Tell me, what does one do when they discover they were reincarnated into an Otome game as the villainess' playboy older brother?

Of course I had always been aware of my situation as a reincarnated person, but it was only when my sister's engagement to the Crown Prince was announced that I finally encountered a piece of my first life after all these years.

I thought, "Hey, this is exactly the same situation as that Otome game I was playing that day!"

But wait. My sister becomes the evil, hated villainess whose fate doesn't ends well at all, you say? As if I'd allow that!

The protagonist wants to steal your man and ruin you? Too arrogant! This daddy(brother) will mess her up good!

I'll completely crush all the people that want to harm my precious, adorable little sister!

Just fall in love with the Crown Prince and achieve your happiness, my sweet sister!

This is such a story.

...Except my sister seems to be a blooming bro-con? And the heroine keeps looking at me funny...

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If you guys like my story and want me to continue writing for a long, long time then feel free to donate, like, a dollar and help support my soda addiction. 

Or maybe I should stick with Agua de Sandia drinks. Y'all ever have one of those before? Basically watermelon juice with ice, sugar, and sometimes other flavorings.

 Fucking. Amazing. You should try it. Report back.