I recommend the novel," Wear It Quickly: The Boss Is Intolerable " to you. Although the novel was labeled as a sci-fi space, it also had the plot where the female protagonist had been reborn many times. Every time she was reborn, it was to abuse scum and fall in love. The female protagonist had different missions in different time and space, but she had to find ways to abuse scum and fall in love every time. In this novel, the female protagonist encountered hidden bosses in different time and space. They were also very cute, making people unable to put them down. I hope you like my recommendation.