[Swords, okay. That's why he seems used to bladed weapons already. Unfortunately he doesn't have any insight to impart on using a dagger versus a sword, since he's never used a sword and he can barely explain how to use a dagger without just showing by doing either.]

[As for his question,]

It was what he had, his mother's dagger. If someone or something needs to die, it's the right shape to cut into the heart or throat. I've never had a reason to use anything else.

[He's definitely just a nice harmless compassion spirit.]