Actually, the reason Abel had leveled up as soon as he was fulfilled was that his Druid soul had merged with the Crystal Angel statue.
Unlike the human soul, it was supported by large amounts of faith from the Holy Kingdom.
With this in mind, Abel's druid soul was basically like the soul of an angel.
Angels were extremely powerful beings. They were legendary even without training.
Since Abel's druid soul had a close bond with his human soul, they could mutually affect one another.
If the main soul wanted to level up, the druid soul had to do so as well.
The main soul's effect on the druid soul would be a long process since it was not easy for the druid soul to level up.
However, on the contrary, the druid soul could easily push Abel's main soul into a legendary without a bottleneck.
Little did Abel know, the angel body was not only powerful in its fighting power, but there was also this crucial ability.