Help me find This one novel

The MC is summoned in another world , where he kills people for some reason he doesn't know about , later on the queen of the kingdom who summoned him tells him the reason

>1 handleearlydef: Hi! I'm afraid I don't know the name of the book, but you're more likely to connect with someone who might in the Name that Book group. Please be sure to check out the tips for posting, especially the tip regarding a helpful subject line. Good luck!

Name that Book: https://www.librarything.com/ngroups/724/Name-that-Book
Posting tips: https://www.librarything.com/topic/329521

Hi! I’m a newbie looking for a contemporary book about a young Black woman looking for a job. She goes to a casting call at a restaurant (don’t remember if she knew it was casting call) she gets the lead. The show is a reality show set in the 1950s or 1960s and the story ends up changing from original plan because the cast reacts to her being Black. They never break character and she is a housewife who calls her family for cooking help so they become characters. It’s kinda like Truman Show meets the civil rights inequalities in 2000 IRL, but the show remains in the past. I hope this description is making sense; please help me find this book. Thank you!

>3 blkbutterfli: Look at message #2- that should help you