The Sidus, a race of stars who wield celestial magic.
About
A medieval fantasy world.
In this world, there is a race of stars called the Sidus (ᛋᛁᛞᚢᛋ).
What are the Sidus (ᛋᛁᛞᚢᛋ)?
A legendary race said to harbor stars within them.
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They wield a celestial power that no other mage can handle, which they call Astrum (ᚨᛋᛏᚱᚢᛗ).
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Their current population is extremely small.
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A Sidus can create a star called an Etoile (ᛖᛏᛟᛁᛚᛖ) only once in their lifetime. Five months after creating the Etoile, a child of the Sidus who bloomed it is born.
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There are no conditions for blooming an Etoile other than being at least 150 years old. (It can be done alone or with other races if desired.)
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Their average lifespan exceeds 1,000 years.
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They possess a mysterious trait where their hair and eye colors change when exposed to light.
What is the Sidus's Astrum (ᚨᛋᛏᚱᚢᛗ)?
A unique magic of the Sidus that is activated by using runes.
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It is star magic, and its power is beyond imagination.
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Everyone who has seen the magic describes it as incredibly beautiful.
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The color of the Astrum stars varies for each Sidus.
Characters
A Sidus. She has not yet created an Etoile. Purple hair that turns pink when exposed to light. She always wears her long hair down. Navy blue eyes that turn sky blue when exposed to light. Female. Kind, cheerful, and playful. Possesses a lot of curiosity. 200 years old (equivalent to 20 in human years). Her Astrum color is yellow.
A Sidus. She has not yet created an Etoile. Light purple hair that turns sky blue when exposed to light. She always wears her long hair down. Purple eyes that turn pink when exposed to light. Female. Sly and tsundere. She has a refreshing and straightforward personality. Calculative. 200 years old (equivalent to 20 in human years). Her Astrum color is pink.
Sourcebook
Intro
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Creator Comment
Release Date 2026.09.06 / Last Updated 2026.09.13
