There is a possibility that Sakura ancestor had link to Senju clan.
Sakura brute force is somewhat same as Tsunade.
Her knowledge & research on Senju history, that's why she knew about Yamato, when he created the house; cage.
She has the medical and chakra control is similar to Tsunade.
Tsunade knew about Sakura skill from Kakashi, such as genjutsu; chakra control,...
Tsunade being a Hokage, could had the privilege and access of all the profile of ninja (of Konoha); + other things.
(In my opinion)
Kishi will reveal the background of Sakura, the last main characters.
Kakashi, Naruto, Sasuke, had being highlighted &or power-up.
Sakura brute force is somewhat same as Tsunade.
Her knowledge & research on Senju history, that's why she knew about Yamato, when he created the house; cage.
She has the medical and chakra control is similar to Tsunade.
Tsunade knew about Sakura skill from Kakashi, such as genjutsu; chakra control,...
Tsunade being a Hokage, could had the privilege and access of all the profile of ninja (of Konoha); + other things.
(In my opinion)
Kishi will reveal the background of Sakura, the last main characters.
Kakashi, Naruto, Sasuke, had being highlighted &or power-up.