After Naruto leaves Konoha village

Sakura got lonely and horny without Sasuke to fawn over and Naruto, who wasn't around to pester her anymore. She became a disciple of Fifth Hokage Tsunade, who taught her medical ninjutsu and techniques like chakra-enhanced strength.

After the Konoha Collapse rebuild, Konoha was full of love and sex, making sure the village was repopulated for future wars. Sakura, as the Hokage disciple, would also be due her part.

[Saw this gif and my brain started working]