Shiena Uchiha

Shiena Uchiha is the sister of Ryo Hyuga and Teizen Uchiha. Even though most of the citizens of the Leaf thought she was the weakest of the trio, she was in fact equal to her siblings in chakra reserves and stamina.

Early Life
Shiena was enlisted into the Academy at age 4, at the same time as her siblings. She was an equal with Teizen at learning speed. Ryo graduated first followed by his siblings a month later. They were assigned to Team Inojin and were hailed as the strongest trio in Konoha history.

Chakra
Even though Shiena isn't a jinchuriki, she has massive chakra reserves. She is the doctor of Team Inojin as she mastered the Creation Rebirth and Ninja Art: Creation Rebirth - Strength of a Hundred Technique. She is the most vital part of the team even though she's not a fighter.

Byakugan and Tenseigan
Shiena has a Byakugan from birth. Her Byakugan matured into a Tenseigan at age 6 a month after her two brothers' Byakugan matured. She was granted Tenseigan Chakra Mode upon awakening it.

Tenseigan Chakra Mode
Shiena's Tenseigan Chakra Mode is a normal one with 9 Truth-Seeking Balls. She can manifest a tenth one if she activates the Strength of Hundred Technique while in Tenseigan Chakra Mode. She can only manipulate gravity slightly, not enough to build a partial Chibaku Tensei.

Sharingan
Shiena's Sharingan was the first to manifest during their first encounter with Mitsuki. She was also the first to notice the Senrigan (NejiHyuga2). She couldn't use Senrigan Sage Mode yet but she could use her Sharingan in unison with her Tenseigan.

Mangekyō Sharingan and Rinnegan
Shiena completely skipped the Mangekyō Sharingan phase and matured into a Rinnegan.

Senrigan
The Senrigan is considered the second most powerful dōjutsu as it is the Sharingan and the Tenseigan which are both of prestigious lines. This dōjutsu gives you two chakra modes: Senrigan Sage Mode and Senrigan Chakra Burst Mode.

Senrigan Sage Mode
The Senrigan Sage Mode is basically the heightened version of Tenseigan Chakra Mode. Just like Tenseigan Chakra Mode, you can infuse your Truthseeker Orbs with chakra which changes color to cyan green, red or magenta depending on the amount of chakra infused. However, Shiena hasn't used this in battle yet.

Senrigan Burst Mode
Shiena has yet to attain this higher form of the Senrigan Sage Mode