Heion Sedai — No Idaten-tachi Episode 6

The 800-year seal provided these exact conditions. The knowledge and memories of the original Idaten who sacrificed themselves to create the seal were "disassembled and reassembled" by the dying demons' pleas, creating a hybrid entity.

To create an Idaten, one needs three things: the collective thoughts of many creatures, a desperate desire for salvation, and centuries of time. Heion Sedai no Idaten-tachi Episode 6

Obami’s physical body is still trapped behind the seal, meaning the figure seen in the outside world is an android or projected consciousness. The Intellectual Arms Race: Miku vs. Ysley The 800-year seal provided these exact conditions

Fans have noted that the transition between their perspectives serves as a pseudo-narration. Both are physically weaker than their peers, yet they are the ones actually steering the war. a desperate desire for salvation