Err, I'm getting it mixed up.
"Destiny Plan", nuff said.
Basically, Arata looks and act like a standard loser hero, always go Leeroy Jenkins in spite of his lack of raw power and have the heroine save him. Fortunately, he's also smart, crazy prepared, and inspiring heroism on the mostly smug/lazy/meek heroines.
And then it was found that he has combo platter ability, stacking up
power source like no one else can.