Wow, I kind of adore Eridan seeking to learn from his hero and ending up teaching him something instead.

And I loved this:
You keep regular correspondence with Karkat, who pleads with you to go against your natural instincts for once in your life and not be a colossal idiot. He accuses you of having finally lost it, and calls Dualscar a self-obsessed, narcissistic megalomaniac, and then concedes to the fact that you would probably find that attractive, considering how you're growing up to be the same exact moron as your ancestor.