自分 is not an Entity, but a Quest offered by [The System]
[Quest]: Conquer S-Rank Tower [the Unfolding Abyss]
Failure: Death
Reward Pool (2 Choices)
Title: Conqueror of Abyss (S-Rank)
Title: Dungeon Walker (A-Rank)
Title: War Torn Old Dog (D-Rank)
Perk: Unstoppable Spirit (B-Rank)
Perk: Large Mana Storage (A-Rank)
Skill: Abyssal Blast (A-Rank)
Unique Skill: Endless Essence (S-Rank)