Higeki no Genkyou to Naru Saikyou Gedou Last Boss Joou wa Tami no Tame ni Tsukushimasu.

Originally serialized as a web novel on the Japanese platform Shousetsuka ni Narou starting in 2018, this series—often referred to by its abbreviated title 'Lastame'—was developed during the height of the villainess subgenre's popularity in light literature. The story follows Princess Pride Royal Ivy, who discovers she is destined to become a wicked last boss in an otome game and subsequently resolves to leverage her immense power and foresight to improve the lives of her people and prevent the tragedy she was originally written to cause.

The light novel adaptation, authored by Tenichi and illustrated by Suzunosuke, features character designs that emphasize the protagonist's transition from a perceived antagonist to a benevolent leader. The series has been well-regarded for its subversion of common character tropes, focusing on the protagonist's genuine efforts to change her fate through diplomatic and systemic reform. Its success led to a manga adaptation by Buncololi and an anime television series, solidifying its place within the modern fantasy light novel canon.