One Punch Man Fanfic Idea #2

What if a saiyan was sent to OPM world.

After crashing to an unknown world the saiyan child go to the nearest city near his crash site to locate the locals of this world and after coming to the city he sees a fight of a man battling some kind of crab monster and how the said man defeat the monster by pulling the eye.

After the fight the saiyan child revealed himself to the man when the scouter detect the mans power rise up at the end of the fight with the monster.

Seeing the mans power doubled in a fight the saiyan child ask the man if he could stay with him and if could observe him to see how his power work.

.....

The Saiyan Child is ten years old in this story where he find Saitama fighting the crab monster.

The Saiyan Child will accompany Saitama in like training and fighting monsters for the next 2 and a half years and after that the Saiyan Child will try to learn about this world via books or internet and going to other places.

The Saiyan will return at the start of canon where he will meet Saitama again when he fight Vaccine Man.

The Saiyan Child can already have the power of flight and can use ki blast and maybe in some time he can detect power/ki.

There will be no other saiyan that will come to OPM world as there will be only one saiyan and that is MC.

MC will be smart after learning many things form all the books he have read.

MC power will be equal or greater than Boros and will be as skilled fighter as Garou.