Tails is tired of being treated like a baby, a weakling and the underdog of the team, he's tired of being ignored, so he chooses to run away...
WARNING:
Bad grammar
Bad spelling
Gore
After Sonic gets hit by a ray gun to make him younger the gang finds out that he isn't any ordinary child but a half demon child. So they have to go though with the hardships of taking care of him so they can get Sonic back to normal.