User blog comment:Demon Killer/Ultimate Sonic: the future/@comment-4548659-20111212114936/@comment-10603955-20111212222033

This was the reason why I stopped making comics. There is very little room for something dark to even talk about.

Think of this story as Sonic's test to become an epic hero. An invisible wall caused by Amy's death is blocking his path and he has to become stronger in order to go through it.