We Agreed to Be a Fake Couple, But You Turned Into a Yandere Girl?!

[Male Protagonist + Multiple Heroines + Husband-Chasing + Shura Field (Romantic Drama) + No System + Cold Female Lead Turns Yandere + Strong Possessiveness]

What would you do if the female CEO who’s been pretending to be your girlfriend suddenly decides to make the act real?

What if a woman you’ve always regarded as an older sister—who’s been very close to you—starts harboring questionable intentions? Would you give in?

What if your ex-girlfriend, who once dumped you to pursue a career as a celebrity, wants to get back together after becoming famous? Would you say yes?

And what if...