After Wain answered, 'Yes,' his Soul Altar came into motion. It glowed brightly, and a blue soul slowly emerged from the cell. Then that soul flew out of Wain's body, as did the pink soul.
At that moment, Wain felt weak, as his Soul Altar had just lost an additional soul, but it was temporary. The blue soul of Last Knight's Soul approached the pink soul Wain received after killing Linlea.
Then they slowly began to merge together. It was like two neutron stars colliding with each other. A large amount of energy began to emanate from them, and Soul Essence accumulated.
Gradually, the two souls became one. Wain was mesmerized by this scene. It was radically different from how a skill improvement happens.
After a few minutes, the two souls transformed into one. There was a wave of energy that spread out several meters around at that moment.