I'm Thinking of Quitting the Villainess' Entourage

Story:

Diet… to avoid a bad ending! In a past life, Cosette was an ordinary housewife. Now she was reborn in an otome game, not as a heroine or even a villain, but as a chubby nameless NPC ?! Is she destined to be on the sidelines of history while the heroine follows her own path, or will Cosette be able to escape the dark future that awaits her? Six years before the history of the game, its first step is to improve its image. With the help of high heels, trainers and knowledge from her past life, she will get herself in shape! Along the way, she will become a participant in royal intrigues and meet the prince. How will things turn out in this unconventional love comedy?