[ Eren isn't the type to give in or give up. November knows this, just from all the interactions he's had with the younger man. What he wonders, though, is how much he can take before he snaps. Before he loses in a big way and isn't able to pick up the pieces. It's one thing to say one isn't going to give up and quite another to be faced by harsh reality.

Neither Mikasa nor Eren have grown up with a normal childhood, that's immediately apparent. But in a lot of ways, they're both so young.

Too young. ]

I believe you. Just be careful when you make your decisions.

[ There's a brief hesitation. ]

You have a lot of people that care about you; don't take that for granted.