Cap 779: One more city I couldn't save

After Shiro says goodbye and leaves, I look to Margareth to talk to her this time, her conversations with Shiro left me intrigued about her identity. 

"Yes, my lady." (Margareth) 

"What are you..." (I) 

"We don't have time to explain right now." (Margareth) 

She stole the storage item on my wrist, so she pulled out the white Crest Shiro had just given me. 

I could see something glowing under her clothes, so she opens the blouse a little letting a red crystal come out through the opening before closing the blouse, this crystal was trapped in chains of crystallized blood that Margareth wore as a necklace. 

The red crystal floats to the white Crest in Margareth's hands then a faint red glow comes out of the crystal to envelop the Crest before returning to Margareth whose expression changed as she went to a window. 

The red crystal on her necklace floats in the window beside her as it flashes a red light.