Reborn as Goku: The Saiyan without limits

An orphan named Tyson who was a biggest fan of dragon ball franchise died due to a bomb blast got his soul merged with saiyan son goku aka kakarot when he hit his head at the age of 3 when grandpa Gohan adopted him now Tyson's soul merged with Goku what are the changes it will cause in this alternative timeline.

points to note :-

It's an alternative universe so some characters will be genderbended.

Goku will be powerful than his canon counterpart.

Timeline follows dragon ball super line but I may include characters from fan mangs and non canon characters and transformations.

This Goku will have harem but not an massive harem .

The harem is upto 10 members no other anime travels no other anime waifus only girls from dragon ball franchise.

side characters like earthlings will have powerups but not so massive.

Goku will have more kids apart from Gohan and goten.