Diet… to avoid the Bad End! In a former life, Cosette was just a normal housewife. Now she's been reborn into the world of an otome game, not as the heroine, or even the villainess, but as a chubby unnamed NPC?! Is she destined to be pushed aside as the heroine follows her route, or can Cosette avoid the dark future that awaits her? With six years left before the game's story begins, her first step is to improve her image. She'll use all the high heels, training equipment, and knowledge from her former life that she can to get herself into shape! As she works to carve her own path, she gets wrapped up in royal intrigue, and winds up getting to know the prince?! How will things turn out in this unconventional love comedy?!
Beating the Heroine at Her Own Game is a completed manga by Hoshimado Ponkichi, first published in 2019. It blends romance, comedy and isekai. You can read all 7 available chapters of Beating the Heroine at Her Own Game online for free on MangaPulse; the newest is Chapter 7, added 2020-03-17. The series is finished, so you can read it from start to end in one go.