I just realized the possibility that the Rokkenjima Murders took place in the Higurashi When They Cry Epilogue’s Saikoroshi-hen Timeline.
The Rika that Rika/Bernkastel possesses is stated by Fans to be just like Erika.
What if Erika is indeed that Rika?
Rika/Bernkastel is told within the Sea of Fragments that she has to kill her mother to escape the Saikoroshi-hen Paradise Timeline but is reluctant. When she leaves the Sea of Fragments she is back in her normal Timeline and understandably assumes she murdered the Saikoroshi-hen Timeline version of her mother.
Rika states that Featherine taught her to eat meat but was it really Featherine who did that?
I suspect that Rika’s short time in the Sea of Fragments allowed Erika time to gain control and she heard everything that Hanyuu said to Rika making her realize just what she needs to do to get rid of Rika Furude: butcher her own mother.
Erika’s personality not only matches the Saikoroshi-hen Timeline’s Rika’s but she also is known to resort to murder to get what she wants.
What if Featherine is seeking to open the Schrodinger’s Cat Box that Erika, Beatrice and Battler created by causing the Logic Error that sent Erika to oblivion?
Erika’s fleeing the police naturally led to her wearing swimming clothes and a life jacket on the ship she was fleeing on because she was planning on jumping in order to escape the police.
She washed ashore and found herself murdered by Shannon who upon seeing her got the idea of killing off the Kanon identity and fully becoming Shannon. Then she reunited with Battler who forgot his promise to her and she went off the deep end.
The point remains: Erika Furude and Rika’s transferring to her thanks to Eua/Ikuko Hachijo(who is implied to be one of Sayo Yasuda’s Personas to the point where https://www.reddit.com/r/umineko/comments/7mq6rx/sayo_is_ikuko/ made a theory on it) is the cause of the Rokkenjima Murders!
Eua Beatrice the second of the Beatrices created by Sayo Yasuda assumed her Demons like Hanyuu and the Hinamazawa Syndrome were just figments of her imagination but when Erika one of the people created by Hanyuu’s influence showed up on Rokkenjima’s shore she realized they were all real and grabbed a gun to shoot her face off so that she could fake Kanon’s death while also killing off Eua Beatrice for causing the Hinamazawa Syndrome.
Sayo thought she was playing pretend but when she realized it was real she killed the evidence then began plans to kill the persona responsible only for Battler to show up and forget his promise to her causing her to go nuts creating a third Beatrice Persona to initiate the Rokkenjima Murders only for Battler’s parents to commit the crime before her which was followed by the third Beatrice Persona, Shannon and Kanon to all commit suicide while the second Beatrice Persona Eua took complete control.
Since Eua Beatrice was now aware of what was really happening her first order of business was to get Hanyuu the first Beatrice Persona(Auau Beatrice whom was cast into the Past by Sayo when Maria dismissed her as Beatrice) into the Realm of the Dead by repairing her horn and taking over her so that she could reveal Erika’s fate that was kept secret to the world.
She(through Featherine) told Bernkastel that she wanted the Schrodinger’s Cat Box’s guts torn out yet conveniently didn’t say which Schrodinger’s Cat Box she wanted to have it’s guts spilled.
She entrusted Ange and Battler’s Stepmother with Witch Powers which she used to apparently find the loose thread that if removed would have prevented the Rokkenjima Murders yet clearly she did not know what Featherine was seeking.
Surely only someone who knows what is going on(through actual educated guesses) can serve as Featherine and Eua’s agent in opening the second Cat Box unveiling the truth about Erika, Auau Beatrice, Eua Beatrice and Rika.
The 9th Episode of Umineko was called The Last Note of the Golden Witch because Eua Beatrice thought it would be her final confession but Ange and Battler’s Stepmother botched her job which means that Eua Beatrice will only expose herself in the shared finale of Higurashi and Umineko.
Episode 10 of Umineko which is also the Finale of Higurashi will be The Final Truth of the Golden Witch and will feature Eua Beatrice’s confession, the release of Hanyuu from her control and her final demise at her own hands as she passes her final confession to Ange to publish in her stead.
), I just went along with it though basically just said something like “yeah, aint that somethin” to brush it off
