Last wish
Last wish
Obviously the kid saved dad and then he bought him the robot cosplay suit using the money from the second wish.
The funeral is for someone that passed and loved that robot so the kid attended in the suit to show his respect.
If it was the dads funeral or a close enough relative to share a magic lamp they would be sitting closer in front.
Maybe he did wish for a kidney but it was more of a monkey paw situation?
The mech suit could have been wish one or two.
The plot twist:
The first wish was giving him a failing kidney. The second, make him forget that.
My guess: