I thought that the half bloods couldn’t hide their ears, so where did her ears go? I really hope it is described in a future chapter, would be a big shame if a big plot point in chapter 1 is ignored in chapter 2
You can use magic now.
You were reincarnated in a world were magic exist.
It is the start of a plan to just move away but if you really don't want to be killed why are you not training?
First rule to fiding out magic exist is to learn to use it and become proficient enough at it that others can't just take you out...
well... yes but she wasn't a kid when she was killed, since the ML was an adult/teenager and she is older than him, but that still doesn't matter since she was in a mission of genocide.