I'm hoping for a reveal that our shockingly hyper-competent 12 year old male lead is actually a transmigrator/regresser/reincarnator himself.
That's make our two twerps actually peers instead of the usual weirdness of one half of the main couple being an adult in a child's body while the other's an actual child. And the weirdness of the whole "I'm going to write this child as just an adult in a child's body anyways" thing that keeps happening.