sorry I am a slow reader.
I get the basic Idea.
But if I bluntly read it all at once it sounds like an OP character.
I mean, I know he's not OP god moding like.
We just need to explain certain cases a little more.
It can be viable for him to be Eva's son.
Emphathy needs a more detailed explanation of how it works
because in plain sight is seems like
"I ran read your every move, therefore I can control your emotions and control you"
This is a delicate manner, please look on it and explain it with a little more detail.
I don't know, something like he can instead read the auras of the emotions. Thus gaining an idea of where they are most likely going to attack depending on their feelings. (A blinded person by rage tends to be all out thus depending on their range, he can evaluate the safest place to position himself in.)
The Inner heard indeed sounds tricky
But try to make it as less tedious to approve as you can.
I don't know State the basis.
Like
"Despite all hearts being different, there would always be 3 basic steps"
Sword (A passionate heart. Strong emotions, being good or bad. Makes sword like weapons in manifestaiton)
Shield (A brave heart, Strong will, the valor/courage to endure. A protective shield /Aura shield)
Wand (A dreaming heart, Strong imagination. Makes awesome magic powers which vary depending on the person that made the special move with Donovan)
[BTW this is just a sugestion, not like I'm telling you what to do. It's merely my opinion]-------------------------
Now, back with Eva, what would their story be?
Right now Eva is set to help on some pending quests for plot developing.
So I need to know what were you planing by being her child so I can get a timing and know how to proceed without altering the other plots at hand.