It's No Fun to Steal the Male Lead, I Want to Steal the Male Lead's Job

[The female protagonist travels back to ancient times + the male protagonist in the original book is reborn + all female characters + sand sculptures + fictional history] I am a low-level 18th-tier actor, and I played the role of a cannon fodder who was killed by the male protagonist as soon as she appeared in a male harem drama. Unexpectedly, when I turned around, I traveled through time and became her! At the critical moment, the heroine moved out to ask for help, but the boss hired her directly, and I became the heroine's confidant! Fighting for men with a group of proud women? Can't do it! Then just grab his job~