Just pretend I am FE for the duration of this post okay

Okay so I have some evidence to suggest that Amarant Coral and Eiko Carol are actually related and that one of their surnames is a typo!

My first piece of evidence: the fact that their surnames are so similar in the first place! I mean come on, they couldn't think of another name? NO! That's because they are related!

My second piece of evidence: Amarant rescues Eiko from Lani in Madain Sari. Why would he do this? He is a bit of a rogue after all! He did it because they are related!

My third piece of evidence: Eiko thinks her parents died when she was only young(er than she already is). Amarant could well easily have just... left and become a rogue. He did it so he could send money back to Eiko's grandpa. He did it because they are related!

That should be enough evidence for now! Amarant is totally Eiko's dad! You can see the proof, you cannot deny it!