The Devoted Lover of the Vicious Supporting Character

A foolish and evil supporting female character is reborn as a bigshot. Looking back at her past self, she realizes how s*upid and blind she must have been. But since this foolish and evil woman is still herself, what else can she do? She has no choice but to spoil herself, of course! A malicious supporting female character is reborn as a man and lovingly spoils her former self.