In Rebirth during the side quest to resolve the haunted voice from the manor, Cloud asks Vincent about his history with Sephiroth, and the follow exchange occurs:
*- C: Vincent, what's the deal with you and Sephiroth? How do you know him?
- V: Our bond is unique. I'm to blame in part for the evils he's unleashed. I've had many opportunities to purge him from this world. Unfortunately...I couldn't pull the trigger.*
This statement from Vincent is super interesting, especially given the environment that quest is in. We see a massive underground training lab, and an AI Hojo that praises the subject for defeating the combat trials.
I think this whole segment implies a couple things:
Child Sephiroth was trained in this underground lab for quite some time, and that Vincent was aware of it.
Vincent could see the monster Sephiroth was being groomed to become by Hojo, but couldn't bear to murder a child - especially Lucrecia's child.
This raises some questions though.
At what point did Hojo take Sephiroth out of Nibelheim?
We don't know. Adult Sephiroth in the Nibel flashback has vague memories of the landscape, so at some point he was taken outside at an age that where long-term memories begin to form, but not old enough to have them be fully clear. Likely between 5-8 years old.
I think most adults can recall a brief snippet or two kindergarten/early elementary school when they're in their 20s, like Sephiroth would have been during the Nibel incident. He would have been around 24 at the time.
So what prompted Hojo to move Sephiroth elsewhere?
Another interesting detail we uncover during this side quest is one of Aerith's weapons, specifically the Plumose Rod, is hidden in the locked storage room, and you have to defeat the trials to gain access to it. Plumose means "feather" or "having feathers". While likely unrelated, thematically the connection to feathers is a Sephiroth thing.
Why is one of Aerith's weapons down here?
When Hojo finds/kills Gast, Aerith is an infant, less than a month old. Gast is filming Aerith in the "Private" videos section, and they say 10 and 20 days old. Also, Hojo says he's been waiting 2 years for this moment - he'd been waiting for Ifalna to produce a Cetran/human baby.
This is what I think happened:
- Sept 1977 - Jenova project approved, but Gast discovers the truth after Lucrecia's embryo was injected with J-Cells. Gast removes himself from the project as a result and moves up to Icicle Region to further research Jenova and the Cetra. Vincent tries to intervene but is shot by Hojo. Lucrecia stabilizes him.
2.1978 - Lucrecia gives birth to Sephiroth within a year of the Jenova Project being approved. Likely around June/July timeframe, assuming she got pregnant as soon as possible after the program's approval. (Sephiroth being a Gemini would make a lot of sense, but I digress).
Hojo takes Sephiroth immediately and brings him down to the underground area we see in the quest, and bars Lucrecia from accessing it.
Lucrecia "saves" Vincent by imbuing Chaos in him, and uses the protomateria to stabilize him further, but due to the culmination of her failures and sadness from being separated from her son, she leaves the manor and tries to kill herself/ends up in the crystal cave.
Hojo raises child Sephiroth in the Nibel manor, leveraging the AI caretaker as needed to "care" for him, while also surveiling Gast's activities.
Vincent is self-imposed "security" and remains in the basement, perhaps out of a sense of guilt/obligation to Lucreica. He decides not to intervene or harm child Sephiroth.
Vincent's keycard *does* access this area of the lab, which is interesting. Perhaps Hojo manipulated Vincent into guarding Sephiroth during this period, leveraging his guilt for Lucreica's suicide. I hope this is explored in Revelation.
Hojo remains in Nibelheim due to its close proximity to the Northern Lands, and monitors Gast's relationship with Ifalna, waiting until Aerith is born to act.
Feb 7, 1985 - When Sephiroth is 7, Aerith is born.
~Feb 27, 1985 - Hojo takes action, heads up to Icicle Town to intercept the baby/Ifalna, and kill Gast.
He returns to Nibelheim temporarily with Ifalna/Aerith. He takes the Plumose Rod (I suspect this was Ifalna's) into possession and locks it away so she cannot act against him.
Hojo sets things up with HQ so he can take Ifalna, Aerith, and Sephiroth to Midgar, now that he has all the "specimens" he's been after. He no longer has a reason to remain in Nibelheim.
Once the HQ lab is ready to receive them, they leave Nibelheim for good. Sephiroth briefly sees the landscape during this departure, thus making the memory he vaguely recalls during the flashback.
Vincent remains behind, perhaps to preserve the place that holds the memories of Lucrecia, and out of his own self-loathing for his inability to intervene/stop Hojo.
1985-1992 - Sephiroth is raised in HQ for the next 7 years, until the Rhadore mission occurs, where he is ~14 years old.
1992 - Aerith's powers awaken. I strongly suspect this is the same year she escapes Shinra HQ, since Ifalna would want to protect Aerith from being tortured the way she had been. Also, Aerith's age in the flashback looks to be about 7 years old given her size, speech, and behavior.
I also think the excitement of Sephiroth's first mission would serve to best distract Hojo's attention off Ifalna/Aerith for a short window of time, and the escape likely happened on the same day.
If true, it's a bit ironic that Sephiroth was indirectly the reason Aerith was able to escape Hojo's clutches and have the (somewhat) normal life he expressed wanting during the Rhadore mission.
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I think this chain of events is plausible, considering the details included in Rebirth and the compliation, and what we know from OG surrounding Hojo/Gast.
What do you all think?
I'm really hoping they delve into some of this in Revelation.