Katarina the "villainess" has successfully lived through the story of the otome game she was reincarnated into without meeting any of the Catastrophic Bad Ends that were destined for her. Now she is excited for the impending school graduation that she never thought she'd live to see.

But suddenly, Keith goes missing! Aided by her friends, our favorite villainess goes out in search for her adopted brother, determined to bring him back home. Meanwhile, men and women alike battle it out for the oblivious Katarina's romantic affections. Who will win in this increasingly tense war of love?