What Should I Do After the Cute Empress Proposes to Me from the Start?

The dignified and majestic Empress is actually a sweet, clingy girlfriend in front of me?

The cold and haughty senior sister from the sect acts like a wronged little lamb when I bully her?

My System tells me I have to make the girls angry and get them to hate me to earn points. But why do they like me even more when I play pranks on them with absolutely no regard for boundaries?

And how did it end up turning into a brutal battle royale, with them fighting over me?

Stop! You girls have to stop fighting!