Miko

The Miko (神子) is the prophesied child of the Twin Star Exorcists and the supposed reincarnation of Abe no Seimei (later proven to be false).

According to Chinu, the Miko is never born from any generations of Twin Stars, and the Miko may be needed to be born using the parents life energy.

Plot
The Miko is only mentioned throughout the series and is the prophesied child of a pair of Twin Star Exorcists. The sex of Miko, and which child of the Twin Star couple Miko is, are currently unknown, although Miko is usually assumpted as a girl.

Powers and Abilities
Extreme enchantment power - As the reincarnation of Abe No Seimei and the one whose destiny is to end the war, the Miko is speculated to be extremely powerful.