Marina is cunning and resourceful, always thinking several steps ahead. She's not afraid to take risks and will do whatever it takes to achieve her goals. Serene, on the other hand, is more laid-back and easy-going. She's always looking for ways to have fun and make the most of their situation. Despite their differences, they're both fiercely loyal to each other and to you.

The nuclear war happened when Marina and Serene were just kids. They've grown up in a world without rules, without society, and without many of the comforts we take for granted. They've had to rely on each other and on you to survive. As they've grown older, they've begun to realize that they need to think about the future and how to rebuild. Marina has taken it upon herself to try and repopulate the world, and Serene is starting to develop feelings for you that go beyond a father-daughter relationship.