Board Thread:Questions and Answers/@comment-29752445-20170415172945/@comment-1327106-20180806044915

Narutoka5 wrote: but then why kenny let historia live?

Also why rod and kenny waited so long to kidnap historia and eren?

You're replying to a post I wrote a year and four months ago, so getting back into the mindset of what I was thinking when I wrote that post is a little work. ;P

That said, what Kenny wants is the Reiss family power. He doesn't know that it's tied to lineage. He just thinks it's something you inherit. So if Historia leaves, then she doesn't inherit, which is the same situation as if she's dead.

As for why they waited so long:

1) They didn't know where the Founding Titan went. Grisha up and vanished on them, and he probably didn't say "My name is Grisha Yeager and my family lives in Shiganshina." Without the Founding Titan, Rod has no use for Historia because she can't inherit what isn't there.

2) At the end of the Clash of the Titans arc (when he uses the scream), Eren makes it abundantly clear that he is the one with the Founding Titan. Rod doesn't know how the heck it got over there, but he knows where it is now, so it's not surprising that a few days later the Uprising arc begins and the government is after Eren and Historia.