Shibou Yuugi de Meshi wo Kuu.

Yuuki awakens in a mysterious manor, finding herself dressed in a maid's uniform. She discovers five other girls, also in identical outfits, in the dining room. The manor is revealed to be a deadly arena, filled with lethal weapons and traps. The only way to escape is by participating in gruesome games. While the other girls are terrified, Yuuki remains calm. She is a professional death game player, accustomed to the brutal competitions and motivated by the prize money. This isn't her first experience with such deadly scenarios, and she's ready to use her skills to survive. The anime explores themes of survival, the psychology of death games, and the contrast between a seasoned player and those new to the horrors.