So far, it seems like our MC is just a battery. He isn't that impressive, himself, aside from a monstrous amount of magic that he can't use. The people around him, however, appear to all be incredibly impressive. So, they're starting a company where he provides magic and everyone else does everything else. If it weren't for the magic that he supplies, he'd be useless, since he can't even hold a proper conversation, it seems. I hope future chapters expand his capabilities, or this is just going to get sad.