Most Saiyan who evolved into a Super Sayajin were only able to do so after a great amount of effort and trouble: Goku, Vegeta, Gohan, etc. Their rage or other emotions had to be extreme.

But there are two exceptions: Goten and Trunks (not the Trunks from the future). How did they achieve it? They hadn't seen or done anything that could drive them to such a level of rage and etc. to allow them to turn into Super Sayajin.

Most Saiyan (Goku, Vegeta, Gohan, etc.) who evolved into Super Saiyan had trouble fulfilling one of the requirements to evolve: Their rage or other emotions had to be extreme.

However, there are two exceptions: Goten and Trunks (not the Trunks from the future). How did they achieve it? They hadn't seen or done anything that could drive them to such a level of rage/intense emotion to allow them to turn into Super Saiyan.

Most Saiyan who evolved into a Super Sayajin, were only able to do so after a great amount of effort and trouble: Goku, Vegeta, Gohan, etc. Their rage or other emotions had to be extreme.

But there are two exceptions: Goten and Trunks (not the Trunks from the future). How did they achieve it? They hadn't seen or done anything that could drive them to such a level of rage etc to allow them to turn into Super Sayajin.

Most Saiyan who evolved into a Super Sayajin were only able to do so after a great amount of effort and trouble: Goku, Vegeta, Gohan, etc. Their rage or other emotions had to be extreme.

But there are two exceptions: Goten and Trunks (not the Trunks from the future). How did they achieve it? They hadn't seen or done anything that could drive them to such a level of rage and etc. to allow them to turn into Super Sayajin.