Luca joined Dragar on a foggy night, stumbled upon by the scouts as he was gathering some berries in hopes of finding something to eat. Unable to properly hunt due to his deteriorating eyesight, which seemed to just be getting worse as he grew.
Crowley brought him back and introduced him to Aun, their healer as well as the leaders of Dragar. He was quickly welcomed to stay and even take on the role of an apprentice to Aun, as they did not need sight to know what sort of illness was affecting another.
With Aun's passing, he has taken on the title of Dragar's healer, nervously, but willing to try and put everything he learned to use - despite knowing he could have learned much more from her.