She was one of astronaut in Dr stone Her husband is Yakov Nikitin She's from Russia She is a ISS crew member of Byakuya ishigami and his friends Her best friend is Connie lee, and shamil volkov and Lillian Weinberg is also her friend too She's witnessing pertification on earth She with the ISS crew living in treasure island after pertification, and she's having two kids with Yakov Six years later, Darya and Yakov go to mainland for antibiotics for Connie, and they're both died because drowned