A journal found in the High Priest's residence. It is about his daughters, Yae and Sae
After she gave birth to twins, the pain of knowing what would happen to them was too much for my wife. She threw herself into the *. It was left to me to raise Sae and Yae, and I tried to ensure that they were not restricted in any way. I tried to stop them from feeling lonely.
The * is said to feed on pain itself. That is why we have this ceremony for the Crimson Sacrifice. That is why the elder twin must kill the other. It is barbaric, but there is no other way...