# How Four Negative Skills = Unrivaled Synergy #009

Canonical: https://www.bookquiver.com/kiichi-kosuzu/how-four-negative-skills-unrivaled-synergy-009/9798899239526

![How Four Negative Skills = Unrivaled Synergy #009](https://quivercdn.com/covers/manga-up/kiichi-kosuzu/how-four-negative-skills-unrivaled-synergy-009_979-88-9923-952-6.jpg?v=2026-05-26%2021%3A04%3A25)

- Book: [How Four Negative Skills = Unrivaled Synergy #009](https://www.bookquiver.com/kiichi-kosuzu/how-four-negative-skills-unrivaled-synergy-009) ([How Four Negative Skills = Unrivaled Synergy #009.md](https://www.bookquiver.com/kiichi-kosuzu/how-four-negative-skills-unrivaled-synergy-009.md))
- Authors: [Kiichi Kosuzu](https://www.bookquiver.com/kiichi-kosuzu), [Shirabii](https://www.bookquiver.com/shirabii), [Hiromi Taihei](https://www.bookquiver.com/hiromi-taihei)
- Publisher: manga_up
- Medium: ebook
- ISBN: 979-88-9923-952-6
- Published: 2026-05-15
- Language: en_US
- Binding: E-book

## Description

Negative Skill x Negative Skill = Positively Invincible Party! Alvin is a young adventurer with an atrocious negative skill. In spite of his overwhelming strength, he's considered a nuisance by those...