Tengen Toppa Gurren Lagann - Rasen Shounentan Summary:
Written by Mia In a land where a barrier surrounds them, that land is the only "world" known to them. One day when a piece of the barrier breaks, Simon witnesses something no one else has ever seen. A starry sky with an unfamiliar light. When he tries to explain what he saw, no one believes him. When he gives up trying to convince everyone what he saw was true, he comes across a girl coming out of a Mecha head. Where did this girl come from and what does she want with Simon?