In Made in Abyss Season 2 Episode 08, Faputa agrees to give Reg a part of her but he must keep his “promise.” After ripping off her own ears and arms she tells Reg that “Together, we will…exterminate them all.” My first thought was the Narehate but I doubt Reg would do it. In the past, it is revealed that the broth was indeed made from “Irumyuui’s children,” not only did the broth nourish the infected it “alleviated the symptoms of their infection.” Belaf has a nervous breakdown after learning the truth but Wazukyan isn’t concerned because Belaf is “one of the Three Sages.” Vueko is worried but heads to see Irumyuui.
Having transformed further, Irumyuui is nearly unrecognizable as she has become an enormous beast. However, she can still recognize Vueko and her children. Irumyuui has another child and Wazukyan takes it. He’s unwilling to even let Irumyuui keep it until it dies. Instead opting to kill it. He claims that “Pseudowater symptoms are best alleviated by fresh meat.” At this point it’s become clear that Irumyuui has been reduced to a food source and only Vueko cares for her. She considers killing Irumyuui and then herself. She’s unable to do so, instead she sobs, horrified at their situation.
The Narehate are born
Irumyuui continues to have children and Ganja slaughter them. The people begin to pray to her as she transforms further. Irumyuui becomes less connected to her children. Irumyuui takes Vueko and then begins moving. The Ganja follow. Irumyuui stops and begin consuming the flying creatures surrounding her. Racked with guilt, Belaf begs to be eaten by Irumyuui as penance for eating her children. A large hole opens in Irumyuui and Belaf enters. He emerges as the serpent we’ve seen in previous episodes. Wazukyan and the other Ganja see the “beauty” Belaf now possess and concludes that they must also sacrifice themselves.
Vueko is appalled accusing the Ganja of stealing Irumyuui’s wish. She attempts to kill herself by jumping off a cliff but she’s captured by Wazukyan and imprisoned inside Irumyuui’s mind. In the now “mindless” Irumyuui, Vueko receives signals from various parts of the village. It’s revealed that Irumyuui’s true wish was to create her last child to seek revenge for her other childrens murder. That child is Faputa. However, she unable to enter IIblu and therefore cannot seek her vengeance. Vueko tells the others that “Faputa is trying to free her mother, Irumyuui, which would mean the destruction of the village.” At this point I’m siding with Faputa as Wazukyan turned out to be a monster. The other Narehate are mostly innocent in my opinion. At some point Faputa must have meet or created Reg and he promised to help her get revenge. Wazukyan was afraid of Reg’s power in the last episode and now I think he knows about Reg and Faputa’s agreement.