"The Second Identity, Distant Banqueter"
Indeed, as Han Dong predicted, he is the curator of the Seraino Great Library.
Of course,
The curator position was not one he always occupied, it could even be said he was 'coaxed' into it...
While it seemed a position of high authority that could gain him honor, in reality, it was an endless "restriction" akin to imprisonment for him.
Ever since being coaxed into this position by the Yellow Robe King, he could never step down.
Upon realizing this, his inner hatred for the Yellow Robe King reached unprecedented levels… This hatred drove him to kill the "Yellow Robe King" at all costs.
However.
Due to the restrictions brought by the library, as long as the Yellow Robe did not step into the library's territory, he could do nothing.
Shortly after assuming the curator position, he embarked on endless dimensional drifting.
