Thinking of Umineko When They Cry:
Episode 1: Legend of the Golden Witch
Episode 2: Turn of the Golden Witch
Episode 3: Banquet of the Golden Witch
Episode 4: Alliance of the Golden Witch
Episode 5: End of the Golden Witch
Episode 6: Dawn of the Golden Witch
Episode 7: Requiem of the Golden Witch
Episode 8: Twilight of the Golden Witch
Episode 9: Last Note of the Golden Witch
https://www.reddit.com/r/umineko/comments/wua5sx/the_umineko_theory_iceberg/
There is the theory that Battler is Ange as well as the theory that Battler does not exist.
The last one I believe is correct.
Battler never existed except in Ange’s head.
I also suspect judging from the appearance of Asumu that Ange and Asumu represent Rika Furude.
Rika let’s not forget had a crush on a guy who shared a Voice Actor with Battler. Once she was introduced to the VR and cloning machine(with which she would create the persona of Shannon) by Hanyuu she would fantasize both birthing and marrying his theoretical son only to discover(from Dr. Irie) that the guy would like a Daughter like her shattering her delusion of being Asumu permanently.
Her body didn’t age either so she switched to being Ange, Rosa and Kanon(possibly as a puppet Body) on the spot while reserving the idea of being Shannon for whoever George represented.
She would mess with the VR and discover her origin as a Clone of Ouka Furude(whom like Hanyuu was unaging due to lacking a horn) whose meddling damaged the Cloning machine causing it to break down even taking out the AI after her meeting with it.
Her mind resolved to be Shannon, Ange and Rosa permanently before the notion of repairing the Machine and taking all of her friends into the VR and having a proper Battler as a boyfriend started looking appealing.
She played sick and had Hanyuu go to the facility and arrange for everyone to show up there. Once the people solved the Witch’s Epitaph and discovered the Facility’s true function Takano dropped the Natsuhi persona and went full Eva insisting that the machine be tested. Hideyoshi tested it on Krauss killing him.
Rika went into a panic demanding that Takano and Hideyoshi turn themselves in for murder only for Dr. Irie(Kyrie) to decide to implement Rika’s plan using invasive surgery on all 15 people at the facility besides himself and Hanyuu(who didn’t need it).
The surgery was fatal in all instances and Takano hijacked the facility killing Dr. Irie and programmed a version of Rika as wanting to go to St. Lucia while taking on the identity of Eua.
After Takano/Eua’s Horn was broken she handed the administrative rights over to the Rika in the Physical World AKA Ouka who quickly discovered what Dr. Irie did to her horror.
Cue abandoning the idea of being Ange and fully subsuming herself in the persona of Beatrice the Golden Witch while restoring the previous administrator AI Lambdadelta.
The Gold Truth that Battler is alive represents how Ouka would take the role of Battler herself and the role of Ange Beatrice while reviving everyone using the Cloning Facility.
By the time of Higurashi Mei Part 2 she(taking on a Glowing-Gold Eyed appearance) has already revived Satoko and Hanyuu(not the Glowing Red Eyed Witches though) while Eua, Lambdadelta and Featherine(created as an Admin for Bernkastel) continue their own actions.