This is an Illustrious style lora for the Bird Sorcerers from the anime Shironeko Project Zero Chronicle. The Bird Sorcerers are a sorcerer magic unit in the dark kingdom in the anime. They resemble a cross between a raven and a condor, and they wear armor along with a helmet. I am not sure of their actual name, and it looks like they could even be living armor in some scenes. The anime never really specified due to how short the season is with only 12 episodes.
A weight of 1 to 1.5 works well with this with most models. Sampling Steps of 15 to 35 works well with most models, as does a CFG Scale of 5 to 7.
Prompts for this lora are ( BirSor, muscular, bird, armor, ). In some cases it would help the look to prompt for ( black helmet, purple chest armor, purple eyes, ).