Is this anime more like Wise Man Grandchild, or Isekai Cheat Magician or Death March Rhapsody? I really liked Wise Man Grandchild and the "OP for the sake of being OP" aspect of it. There is no point making a character all powerful if they just going to hide it. Anyone who read the light novel want to share a bit. I don't mind spoilers but if you can keep them light, it be appreciated.
The overall story is a nice read to which I find myself excited for the next volume. So long as the staff don't destroy the story, it should be a good time burner anime. Rio/Haruto will be overpowered, but not at the very start. His latent abilities are there, but it takes a while for him to grow that skill and understand that his essence is different from the mana he learns about at a young age. There is also a few characters who rival Rio/Haruto's strength throughout the story.