"The Undying, oh, I know this group."
The Assassin Angel said indifferently,
"They made quite a stir in star systems far from the Angel Enterprises Alliance, attracting their interest. The Alliance dispatched a fleet and abducted a few of the Undying, bringing them to the Archangel Group for research. These Undying eventually used death in combat as a way to escape, and the outcomes of the Alliance's research were very limited."
"Then who is the plane core behind the 'Undying'?" Noland Lee asked.
The Assassin Angel replied,
"This cannot be ascertained yet, since there is more than one plane core with similar abilities. From my observations, the Undying's immortality is secondary; the key lies in their ability to 'retain their memories after resurrection' and 'learn any extraordinary abilities through infusion.'"