Railhero: Hunted

Takes place after "A Certain Scientific Hero". (By about five seconds)

After Mix finishes the fight with his other self, him and his friends make a desperate retreat as several of their remaining enemies come down on him.

Things seem to return to normal for a short while, but peace is short lived as Mix's enemies don't stay away for long. This time the enemy seems to have found new allies, as well as some old ones thought long gone.

With all these people out to take his life once again and an uncontrollable source of power forming within him, Mix has no choice but to keep moving as he's mercilessly hunted.