To you, in 2000 (the fall of Shinganshina, part 1)

Kira, three things rule her entire existence out: her iron willpower, her ridiculously large amount of humor, and her ability to transform into a titan.
She's always been able to do this, though she never knew how. Growing up in the middle of the wilderness, behind Wall Maria, Kira was trained to control her ability by the one man who knew her secret: Master Nethere.
But the day Nethere was brutally Murdered, and Kira kidnapped, she meets Eren and Mikasa.
Through a story of twisted fate, Kira joins the legendary trio in a journey that will shake the very existence of Mankind.