In this way, even if the true form of Green Pupil dies, it can be resurrected in a well-trained body.
Not to mention Ian, since Shasha and Elan wouldn't compete with it anyway. Even if they really did, generally speaking, they wouldn't be able to outmatch its original owner, who possesses the Dragon Soul.
This is akin to using the strength of others to sustain one's own life. Of course, the prosthetic of Green Pupil can also allow other life forms to comprehend the life essence of the Aether Crystal Dragon, thereby rapidly advancing their spiritual realm.
The dragon nourishes its life with the soul of a human, while humans nourish their souls with the dragon's body.
Both Shasha and Elan have benefited greatly, with Shasha's rapid increase in wisdom being clear evidence. Furthermore, Elan, even before becoming a Sublimator, had already sensed the Origin Quality, a trait only true geniuses possess.
Even Ian cannot be said to have gained nothing.
