The closest canon approximation of a "stalker" is her lifelong teammate, Jiraiya. As a self-proclaimed super-pervert, Jiraiya frequently attempted to peep on Tsunade during their youth, famously resulting in him being brutally beaten and left with broken bones. Their relationship, while rooted in deep mutual affection and tragedy, established a running gag regarding the dangers of invading Tsunade's privacy. The Villains of the Leaf
Success frequently relies on leveling up specific attributes like "Stealth," "Charisma," or "Chakra Control." Tsunade Stalker Full Version