Guardians Of Gaia (Rewritten)

When an inter-dimensional threat plans to take over our universe, six boys are called upon to defend it. However, their powers have been depleted during the years of their hiding, and they need to train to regain them. With an army rapidly growing in number, ready to attack at any moment, will the boys be powerful enough in time to defend this universe? Or will they be overwhelmed and forever doom us to enslavement, or worse, a species wipe-out...