A Wild Last Boss Appeared! is a oNA (web) anime that premiered in fall 2025, produced by WAO World.

About the production: the story comes from a light novel, there are 12 episodes of about 23 minutes and its current status is "finished".

Its main genres are action, adventure and fantasy, with themes such as Magic, Isekai, Video Games and Female Protagonist.

On AniList, A Wild Last Boss Appeared! has an average score of 74%, a good score, and appears on 53,530 users' lists.

The franchise continues in or follows from: Yasei no Last Boss ga Arawareta! 2nd Season.

An MMO gamer awakens as the Black-Winged Tyrant, Lufas Maphaahl, rising from her sealed fate—only to find this is very real. Her defeat 200 years ago unleashed monsters of death, and the legend is one of terror. Now, trapped in the body of history’s most feared conqueror, he must survive a world that wants her dead…and uncover why he’s here. (Source: Crunchyroll)

Official synopsis from AniList.