Other than having the Life Seed Abilities, the Life Blood Cultivators could awaken a skill for each realm using the Skills Crystals. These skills are called Life Seed Skills or Life Skills.
However, the number of Skill Crystals required would increase with each realm.
A Life Blood Soldier requires only one Skill Crystals to awaken a Life Skills whereas, a Life Blood Sergeant requires 10 Skills Crystals.
Previously, Aeon used his two Skill Crystals to upgrade his First Life Skills but he gained another 10 Skill Crystals for clearing the Secret Space which Aeon decided to awaken a new skill.
'Let's awaken the second skill instead of upgrading the first skill.'
For a moment, Aeon thought about upgrading his first skill to level 3; however, in the end, he felt having a second Life Skill would be beneficial.
'Swoosh'