When Tirpitz ship sank Tirpitz the shipgirl itself survived with her left arm gone and was saved by the Ironblood soldiers and scientists who are secretly hiding in Norway and experimented her for there project called "Winter Soldier" to spread fear...
As The Soviet Union and Ironblood kept using Tina(Tirpitz), Dr. Thessa Gears(34 years old) became worried that when Tina found out the truth she'll be traumatized at the things she done and so Dr. Thessa tries to create an formula that will disable the word that the officers used to control Tina permanently and the Ironblood officers and researchers didn't discover her plan making herself safe for now
Until The Soviet Union betrayed them and attacks the Ironblood HQ, with the Ironblood Officers fighting back at the enemy to prevent them from getting Tina
As this was happening Dr. Thessa runs to the room containing a lot of chemicals to cure Tina and a copy of the book that was used to control Tina and then she locked the door and mixed the chemicals and creates an blue substance and puts it into small vial necklace
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(Imagine the color is blue)
And then she puts it in her neck and then picks up the book and was about to open the door only for her to be shot by an Soviet Soldier in the stomach and was about to kill her only for Tina to came and kill the soldier and then Thessa fell unconscious
As Tina saw her she picks her up and grabs the book and escaped the Facility as all of the Ironblood officers are getting killed one by one and Tina(Tirpitz) ship was hidden in an underground cave with water by the Remaining Ironblood Scientists to make sure the Soviet Union can't get it and then killed themselves
In a Norway Motel
we could see Tina healing Dr. Thessa bullet wound and then lefts her with Fake documents to escape from the Soviet Union and to make sure she have an new life away from this chaos and then Tina left to head to the Soviet Union to surrender but not before saying something to her first friend
Tina: Until we met again Dr. Thessa, Farewell
and then she completely left and then when Dr. Thessa woke up she saw the vial and the copy of the book is safe and an letter from Tina saying that she doesn't need to go back to the Ironblood Hq because it has fallen and she'll surrendered to the Soviet Union and tells her to live an normal life which she head to UK to continue her cure for Tina
as this happens The Soviets used her to participate in the Vietnam war killing many key targets from the enemy side and was also involved at the assassination of President John F. Kennedy and brainwashed Lee Harvey Oswald to make him the killer of the president in 1963 and kept killing people who are deemed threat to the Soviet Union
and then she was put in Cryostasis Chamber at 1991 when the Soviet Union fell so no one could use her again but not without an final command:
"Kill anyone who will free you from this chamber"
Until 20XX the sirens attacked the base where she is hidden and was about to free her until the Shipgirls (Got revived) found them with one siren escaping with the Original book and the shipgirls discovering the chamber
And when they delivered this to the Azur Lane Hq and opened it chaos will happen
