"if dying is the only way to keep those I love safe then I would gladly give my life up for them, so they can live on, that's how I truly feel."
Atsuko Aimi an mysterious Child of Jiriaya and Tsunade and is current known to the world at large as The Tenseigan Terrorist (テンシガンテロリスト, Tenshiganterorisuto) a criminal of who've been slaughtering civilians, clans, also villages in hope to accomplishing its dream to restore the Holy God Tree.
"Humanity, such a feeble race that can't even rely on themselves and yet they rely on beasts and demons, that is what makes humans scums."
Atsuko Aimi appeared when the nine tails attacked the leaf and later sealed Atsuko Aimi was born with the Mask on he/she's face also with a piece of paper saying "Secrets can never be reveal to anyone" so Atsuko Aimi was raised under Danzō root division for most of her life to feel no emotion, feel no attachment, and to fear nothing.
During he/she's stay in the Root Organization, Atsuko Aimi has been training on his/her Wood Release abilities along with "Kinoe" under danzo's watch for several years til Atsuko Aimi Left Root and later was adopted by the Hyuga Clan main branch.
Atsuko Aimi Byakugan Awakening
Haishi and the elders decided to keep watch over Atsuko Aimi to see if she/he has the bloodline, Hinata Hyūga and Queen met during the Anniversary of Yodaime hokage when she was getting picked on by other kids in the academy which Atsuko Aimi took care of quickly. Later that night Atsuko Aimi and Hinata decided to walk home together in silence but beneath the mask, Atsuko Aimi noted that the princess is mostly quite and shy, while they walk home Atsuko Aimi noticed a Shinobi for Kumogakure was stalking them so Atsuko Aimi ordered hinata to hide.
"I'm sorry i frightened you with this image you had to see my princess, I promise I'll protect from other's with my life I swear on it."
Atsuko Aimi vs Kumo nin.
When Atsuko Aimi confronted the Kumo Shinobi he struck at the young mask kid which enraged him/her which triggered the awakening of the Byakugan later killing the kumo ninja but Atsuko Aimi continued his/her onslaught against the corpse with rage but was stopped by Hinata. Atsuko Aimistayed inside the room near hinata's for the past several nights til the Head Ninja snuck in and kidnapped Hinata but was delayed by Atsuko Aimi's attempt to save her but was knocked unconscious, later waking up seeing Haishi holding Hinata and a few hyuga members carrying the mask child back.
Atsuko Aimi's Decision upon the Hyuga Affair
after the in the death of the would-be-thief: the Head Ninja of Kumogakure the Raikage demanded that the death and corpse of Haishi Hyūga. a little later Atsuko Aimiwalks in to comfort Hinata from the traumatizing event but Hizashi forbid Atsuko Aimi to comfort or help Hinata in anyway which angered him/her to the point Atsuko Aimi challenged hizashi to a duel but ended with hizashi nearly crippling kouhi but rewarded him/her for such spirit. the day when Haishi death was announced Atsuko Aimi and Hinata was devastated to the point the mask child nearly committed suicide which made many Hyūga's keep watchful eye on the mask child.
Atsuko Aimi Defect from the Leaf Village and the Tenseigans Awakening
that night Atsuko Aimi began her/his plan to escape the hidden leaf village but decided to visit hinata before committing the act.
"Hinata what ever happens remember to never stoop so low like i have, never walk the path that'll lead you to despair, never give up, become strong, cause your a Hyūga, your a special Hyūga, your special to me."
"your a special child, it would be a shame if you died here without me giving you a gift, a gift that'll shape the world anew."