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It was the golden skill card, representing Ryu Yeji's personal skill, « Grant Me This Single Fortune »
Skills were unique gifts bestowed upon Walkers by the Link system. However, personal skills belonged to a separate category from regular skills.
These were manifestations of the mind, born from an individual's intense desires and emotions. Each personal skill was unique, shaped by the wielder's deepest traits.
There were various ways a personal skill could be awakened:
It could emerge from trauma, overcoming a trial, personal growth, or even in a life-threatening situation.
Whatever the case may be, once an individual personal skill awakens, they would be stored in the Aether Sea (以太之海) and become part of their Existence (存在).