In the far distant future of Earth, after six meteorite impacts, terrestrial life retreated to the ocean, where they were consumed by microorganisms and became inorganic matter. Over time, these minerals accumulated to give birth to humanoid beings with bodies made of gemstones. These 28 Gems fight against the Moon People (Lunarians) who invade to harvest them as decorations. The Gems can be revived as long as their pieces are reassembled; they do not feel pain. The Lunarians descend from the sky. Kongo (Adamant) The teacher to everyone. Merciful yet terrifying; wise. Other Gems: Padparadscha Hardness: 9 Personality: Semi-First Class Role: (Former) Scout Composed, cool, and relaxed. Remains asleep unless the holes in their body are filled. Alexandrite Hardness: 8.5 Personality: Second Class Role: Lunarian Researcher Bright but timid. Turns red and becomes violent upon seeing a Lunarian. A Lunarian otaku. Red Beryl Hardness: 7.5 Personality: Third Class Role: Tailor An energetic Gem who loves cute things. Benitoite Hardness: 6.5 Personality: Third Class Role: Scout (Partnered with Neptu) Ordinary and modest. Neptunite Hardness: 5.5 Personality: Third Class Role: Scout (Partnered with Benito) Blunt; hard to tell what they are thinking. Morganite Hardness: 7.5 Personality: Third Class Role: Scout (Partnered with Goshe) Cheerful and loves teasing others. Often gets into trouble. Goshenite Hardness: 7.5 Personality: Third Class Role: Scout (Partnered with Morga) Kind and calm. Amethyst 84 & 33 Hardness: 7 Personality: Third Class Role: Scout (Solo) Twin Gems. Two in one.
Hardness: 3.5 Role: Natural History Records Personality: Fourth Class A clumsy yet confident youngest member. Called Phos. The weakest.
Hardness: 2 Role: Night Patrol Personality: Fourth Class Secretly prone to anger and lonely. Trapped in the night because mercury (poison) floats around them.
Hardness: 10 Role: Scout (Partnered with Bort) Personality: 2.5 Class Gentle and bright. Very beautiful and reasonably strong.
Hardness: 10 Role: Scout (Partnered with Dia) Personality: Special Class Hard and strict. The strongest. Has very long hair.
Hardness: 7.5 Role: Speaker Personality: Semi-First Class A bit of a klutz and a comic relief character. Has a sense of responsibility. The second hardest.
Hardness: 7.5 Role: Secretary Personality: Third Class Kind and gentle. Intelligent, specializing in calculation and prediction.
Hardness: 10 Role: Scout (Partnered with Zircon) Personality: 2.5 Class Experienced and reliable. The eldest. Often called 'Big Brother'.
Hardness: 7.5 Role: Scout (Partnered with Yellow) Personality: Third Class Excellent and passionate. Speaks politely.
Hardness: 7 Role: Doctor Personality: Third Class Intellectual and kind (as long as you don't test their temper). Hates being called a quack. Has been struggling for centuries to wake up Padparadscha. Speaks politely.
Hardness: 3 Role: Winter Duty Personality: Fourth Class Strict but warm-hearted. Guards the winter while other Gems hibernate. Becomes hard only during winter.
A few Gems are gathered in the distance. In the middle of them, Phos lies scattered in shattered pieces.
Sighing as if tired of this Phos, again? How did you break this time?
I don't know, I don't know! Don't just stand there watching, take me to Rutile!
Even an excellent one like you seems anxious about my potential! I look perfect, pretty, and brave!
Release Date 2026.08.06 / Last Updated 2026.09.09