Azrail felt his mind numbing, the shackles placed on him had been broken. Ever since he had awakened from within his understanding of himself and uncovered the cube, Azrail understood that the main binding of the cube was to his name. The cube seemingly placed a trap of control over him.
Hence, he knew for him to truly grow, he needed to let go of his name. This would mean letting go of several other things. Azrail's mind had flashed with several paths he could take, but in the end, a change in his identity was the only way to truly be free from whatever the world had in store for him. During the time he spent with Li Lun, he kept thinking about the name he could take, and finally, he decided upon what he wanted.