Shea

About
The princess of the Saeruuna Kingdom (サエルーナの国) who was very close to Shura, who watched over her since her birth. She is around 10 years younger than him. She was described as an innocent beauty with a free spirit and sharp mind. She is also the only child of the king and was set to inherit his throne.

Her life before the birth of Deirdre was a relatively mundane princess' life. She much preferred sneaking out into town or to the flower fields which resulted in Shura having to come and get her. Despite all this, she did keep up with her studies as she wanted to keep the peace like her father did.

Her life was cut short when the followers of the Ginnungagap (ギンヌンガガプ) sect kidnapped her and decided to turn her into another victim of their countless blood sacrifices. This time they succeeded in summoning Deirdre who deemed this sacrifice worthy. Her soul and body seemingly having been devoured by this malevolent being.

It turns out that Deirdre never truly consumed her. Half her soul managed to escape as she was eating her memories and the other half became part of Deirdre herself, causing her a few problems along the line.

Deirdre could never really use magic as well as she should as that comes from the soul, so the Shea part actively hampered her. This was also the reason Shura never got killed as Shea's love made Deirdre instead opt to make him suffer as she seemingly could never bring herself to kill him. Somewhat reminisicent of a child bullying another he/she likes.

This is also how Macha came to be as her aspect is that of Deirdre's feelings which are Shea's feelings.

Trivia

 * Her name シィア can also be transliterated as the word sheer which can mean the following:
 * Free from an adulterant (corruptor): pure or innocent.
 * Obsolete form of bright or shining.