Big Order contains episodes 1-10 and the OVA of the anime directed by Nobuharu Kamanaka.

Dominate the world in order to save it.

Ten years ago, Eiji Hoshimiya destroyed the world. Or close enough, anyway. Eiji is what they call an Order: someone whose wish, their innermost desire, has been given form. Money, immortality--whatever it might be, an Order has the power to make it real. And the most terrifying part? Orders look like any normal human, with no way to tell one from the other. Yet, as the destroyer of the world, that's how Eiji has managed to live since the disaster, alone but safe, and terrified to use his power again. But he might not have a choice when his class gets a new transfer student, one who has too keen an interest in a supposedly anti-social boy like him.