**Hardness**: 2

The only gem who goes on night patrol. Due to their body producing Mercury (which is harmful to Gems and living things), they are isolated and ashamed of themselves. They hate fighting and hate to be seen.

According to [Rutile](https://anilist.co/character/123399/Rutile), Cinnabar has an extraordinary amount of talent and combat ability but is too much to handle due to their uncontrollable poison. Cinnabar's silver poison gathers faint light at night, which keeps them awake and aware while night patrolling. According to [Kongou](https://anilist.co/character/123394/Kongou), the night patrol is something Cinnabar came up with by themself. They used to spend their time during the day in Hollow Cape, waiting for the Lunarians to take them since they thought they may at least be of use to them. They are knowledgeable about things other gems don't know about.

[Phosphophyllite](https://anilist.co/character/123385/Phosphophyllite) was recommended by the gems to see Cinnabar for the encyclopedia. After accidentally hearing their secret and wish, Phos promises to help Cinnabar find a job more suited to them than night patrol, saying, "a fun job only you can do." When encountering Phos each time, Cinnabar seems doubtful of their words and outwardly annoyed with them, even going so far as to run away at one point. But they are the only gem they regularly speak to. Although they try not to show it, they have a tiny sliver of hope that Phos will be able to fulfill their promise.

Cinnabar is able to pull out an abundant amount of mercury. They're able to manipulate it in the air, from a distance, and around them, as some mercury droplets constantly hover around them. They seem to not be in full control over it and sometimes release it without wanting to. The mercury allows them to stay up during the night due to its reflective properties shining light. The mercury is dubbed "liquid poison" by the other gems. It's known to damage both organic life and the gems. Often with spills, the area becomes inhabitable for a long time afterward, often looking dead after later observation. In terms of the gems, the mercury is known to damage surfaces it's exposed to and causes light to be blocked from reaching those parts, requiring the pieces to be removed.

(Source: Houseki no Kuni Wiki, edited)

In a world inhabited by crystalline lifeforms called The Lustrous, every unique gem must fight for their way of life against the threat of lunarians who would turn them into decorations. Phosphophyllite, the most fragile and brittle of gems, longs to join the battle. When Phos is instead assigned to complete a natural history of their world, it sounds like a dull and pointless task. But this new job brings Phos into contact with Cinnabar, a gem forced to live in isolation. Can Phos’s seemingly mundane assignment lead both Phos and Cinnabar to the fulfillment they desire?
 
(Source: Kodansha USA)
 
Note: Nominated for the 8th Manga Taisho in 2015.

In the mysterious future, crystalline organisms called Gems inhabit a world that has been destroyed by six meteors. Each Gem is assigned a role in order to fight against the Lunarians, a species who attacks them in order to shatter their bodies and use them as decorations. 
 
Phosphophyllite, also known as Phos, is a young and fragile Gem who dreams of helping their friends in the war effort. Instead, they are told to compile an encyclopedia because of their delicate condition. After begrudgingly embarking on this task, Phos meets Cinnabar, an intelligent gem who has been relegated to patrolling the isolated island at night because of the corrosive poison their body creates. After seeing how unhappy Cinnabar is, Phos decides to find a role that both of the rejected Gems can enjoy. Houseki no Kuni follows Phos' efforts to be useful and protect their fellow Gems.

__Height:__ 160 cm (5'3")

[Profile](http://www.hirata-office.jp/talent_profile/woman/mikako_komatsu.html) | [Artist Profile](https://www.toysfactory.co.jp/artist/mikakokomatsu/) | [Website](https://www.hirata-office.jp/komatsu_mikako/) | [Twitter](https://twitter.com/mikakokomatsu) | [Instagram](https://www.instagram.com/mikako_komatsu/)

A Japanese voice actor affiliated with Hirata Office. She married fellow voice actor [Tomoaki Maeno](https://anilist.co/staff/96489/Tomoaki-Maeno) on May 12, 2020.

__Non-anime roles:__
- Centi - Goddess of Victory: Nikke (VG)
- Feixiao - Honkai: Star Rail (VG)

[Website](http://www.averysmithhart.com/) | [Twitter](https://twitter.com/averysmithhart) | [Soundcloud](https://soundcloud.com/avery-smithhart)

Avery started acting in her senior year of high school, and she has continued to love it ever since. Her first major voice debut was in the BBC award-winning audio drama, Above and Below, where she voiced three characters.

[Official Website](http://www.corinna-dorenkamp.de) | [Synchronkartei](https://www.synchronkartei.de/sprecher/1470/2) | [Instagram](https://www.instagram.com/corinna_dorenkamp_sprecherin)

The Gems fight against the Lunarians, beings who attack them and use their shattered bodies as decorations. Each Gem is assigned a role, and Phos, the youngest, is assigned to create an encyclopedia of natural history.
 
Note: A promotional video that was released through YouTube in commemoration of the publication of the manga's first volume. 
(Source: HIDIVE)

Shinsha