I Played the Role Until I Became the Real Heiress

They want an office worker like me to stand in for a rich heiress on a dating reality show, and I even have to pretend to be rich? Oh well, the director is paying well. But something's not right. I became the real heiress? And my childhood friend, who grew up with me, joined the show to quietly protect me! This is just... way too satisfying!