On the Arcana continent, there was only one known method for breaking through to rank-4. That was to accumulate an excess of mana, condense it until you couldn't anymore, and then let it explode.
The explosion would kill the talented wielder, and before they lost consciousness, the wielder need to bring the aura of death surrounding them into their core. The realm of rank-4 was also known as the "death surpassing realm."
This didn't mean a rank-4 wielder was immortal, but the mana underwent a fundamental change when one conquered death, and this change was what made someone rank-4.
'The mana feeds off of the deathly aura of the wielder and becomes denser and stronger in an attempt to survive the explosion. This realm allows the wielder to wield more mana with the same soul size,' Alaric remembered.
