I randomly drew Kaden... then I randomly redrew an old design I did for Ratchet's mom (I'm usually against stuff like that, but I drew her randomly once. She didn't have to the braid before though). Then I just threw in the last one of Kaden and Ratchet with the pocketwatches.
Then I realized that it could all be sentimental garbage for Kaden and threw in some lines from a scrapped idea for "To Hell and Back". The epilogue changed, but originally it was Kaden greeting Ratchet when he dies in ACiT and he basically summed up the story, throwing in his two cents now that he was sane. But he does justify what he did when was less sane as Ratchet disappears, because Clank saves him. I threw those lines in here, because they fit.
In case you can't read it:
Is it so wrong to want to see my family again?
To see my wife with our son in her arms?
To give my son a chance to meet me?
To see me with his own eyes?
I dunno, I thought it was sweet.
All characters (c) Insomniac Games
Design for Ratchet's mom is mine though.