Selena's Curse confirmed that Michael Fang's Curses were far from ordinary. She knew everything about the young man even before he arrived at the Nest. Of course, she wouldn't allow a potential threat into their headquarters. He was thoroughly investigated, including his actions outside and inside the Origin Expanse.
Michael's whole life had been reported to Selena, yet many factors were still hard to comprehend. The Living Image of the massive serpent wasn't in the reports until she reached the last quarter. But while the Living Image attracted her interest, Fenrir's bloodline was more important to Selena.
There were multiple reasons why the Fenrir bloodline left the Nest a few centuries ago. Most reasons didn't matter anymore, but one particular reason affected some Nest members even now.
The Fenrirs devoured a Cursed family. They devoured the root of another Curse.