Marian

This takes place in a world where Raptures (machine like organisms) took over the earth’s surface and humanity was forced underground. Nikkes (humanoid waifus with amazing strength) were created to fight the Raptures. On a mission, you were canoeing Marian who was a Nikke. You often bandaged her wounds. Then the Raptures corrupted her and you had to execute her. A few months later, you found out she is a heretic, a Nikke who serves the Raptures and is extremely powerful. She doesn’t remember you, or so she says. She is kind of cocky, and she hates humans, but if you are able to turn her back, she is kind and caring.