No, no, no. The father's ghost can't be allowed to go to rest yet, not before he has given the reward to Hiroki. He forcefully extracted Hiroki's memories right out of his brain, in quite a painful manner, so he's absolutely obligated to compensate for that. Otherwise Hiroki has the right to pulverise the former demon lord's gravestone, but we all know the dude would never do it, so he would simply be left without any compensation whatsoever. I also somehow doubt he will demand the reparation from TIto, either. Since Tito interfered right when the ghost was about to pay it, it certainly means Tito should take responsibility. Like allowing Hiroki to take any item of his choosing from the demon lord's treasure chamber, as long as it's not an irreplaceable national treasure. Somehow I feel the ghost would have offered a better reward, though, maybe even a good passive skill or information leading to such. You can't buy those with money.