# A Wild Last Boss Appeared!

A Wild Last Boss Appeared! (野生のラスボスが現れた！, Yasei no Rasu Bosu ga Arawareta!) is a Japanese light novel series written by Firehead and illustrated by YahaKo. It was initially serialized on the user-generated novel publishing website Shōsetsuka ni Narō from October 2015 to April 2019. It was later acquired by Earth Star Entertainment who published it under their Earth Star Novel imprint from February 2016 to April 2019. A manga adaptation illustrated by Tsubasa Hazuki began serialization on Earth Star Entertainment's Comic Earth Star website in June 2017. An anime television series adaptation produced by Wao World is set to premiere in October 2025.

## Characters
### Lufas Maphaahl (ルファス・マファール, Rufasu Mafāru)

    Voiced by: Ami Koshimizu

### Dina (ディーナ, Dīna)

    Voiced by: Yuri Usui [ja]

### Aries (アリエス, Ariesu)

    Voiced by: Yukina Shuto

### Libra (リーブラ, Rībura)

    Voiced by: Hisako Tōjō

### Aigokeros (アイゴケロス, Aigokerosu)

    Voiced by: Naoya Uchida

### Parthenos (パルテノス, Parutenosu)

    Voiced by: Mika Kanai

### Virgo (ウィルゴ, Wirugo)

    Voiced by: Kokoro Omori

## Media
### Light novel

Written by Firehead, A Wild Last Boss Appeared! was initially serialized on the user-generated novel publishing website Shōsetsuka ni Narō from October 1, 2015 to April 15, 2019. It was later acquired by Earth Star Entertainment who published nine volumes under their Earth Star Novel light novel imprint with illustrations by YahaKo from February 15, 2016 to April 15, 2019. The series is licensed digitally in North America by J-Novel Club.
| No. | Original release date | Original ISBN | North American release date | North American ISBN |
| 1 | February 15, 2016 | 978-4-8030-0872-2 | July 12, 2020 | 978-1-7183-0216-7 |
| 2 | June 15, 2016 | 978-4-8030-0934-7 | September 30, 2020 | 978-1-7183-0218-1 |
| 3 | October 15, 2016 | 978-4-8030-0963-7 | January 11, 2021 | 978-1-7183-0220-4 |
| 4 | April 15, 2017 | 978-4-8030-1035-0 | April 7, 2021 | 978-1-7183-0222-8 |
| 5 | September 15, 2017 | 978-4-8030-1111-1 | July 2, 2021 | 978-1-7183-0224-2 |
| 6 | December 15, 2017 | 978-4-8030-1142-5 | September 17, 2021 | 978-1-7183-0226-6 |
| 7 | April 16, 2018 | 978-4-8030-1180-7 | January 3, 2022 | 978-1-7183-0228-0 |
| 8 | October 16, 2018 | 978-4-8030-1236-1 | April 8, 2022 | 978-1-7183-0230-3 |
| 9 | April 15, 2019 | 978-4-8030-1282-8 | July 15, 2022 | 978-1-7183-0232-7 |

### Manga

A manga adaptation illustrated by Tsubasa Hazuki began serialization began serialization on Earth Star Entertainment's Comic Earth Star on June 7, 2017. The manga's chapters have been collected into ten tankōbon volumes as of February 2025. The manga is also licensed in North America by J-Novel Club.
| No. | Original release date | Original ISBN | North American release date | North American ISBN |
| 1 | December 15, 2017 | 978-4-8030-1135-7 | March 27, 2024 | 978-1-7183-3811-1 |
| 2 | April 12, 2018 | 978-4-8030-1174-6 | July 17, 2024 | 978-1-7183-3813-5 |
| 3 | September 12, 2018 | 978-4-8030-1225-5 | October 9, 2024 | 978-1-7183-3815-9 |
| 4 | April 12, 2019 | 978-4-8030-1284-2 | January 1, 2025 | 978-1-7183-3817-3 |
| 5 | October 12, 2019 | 978-4-8030-1344-3 | March 26, 2025 | 978-1-7183-3819-7 |
| 6 | March 12, 2020 | 978-4-8030-1399-3 | — | — |
| 7 | September 12, 2020 | 978-4-8030-1450-1 | — | — |
| 8 | March 12, 2021 | 978-4-8030-1499-0 | — | — |
| 9 | March 13, 2024 | 978-4-8030-1920-9 | — | — |
| 10 | February 12, 2025 | 978-4-8030-2073-1 | — | — |

### Anime

On August 23, 2024, during NBCUniversal Entertainment Japan's panel at Anime NYC, an anime television series adaptation was announced. The series is produced by Wao World and directed by Yūya Horiuchi, with Kazuyuki Fudeyasu overseeing series scripts, and Maiko Ebisawa designing the characters. It is set to premiere in October 2025.