Thuban is a dragon with the ability to control aurora, they live on a cold planet that is always colder than the freezing point on the whole surface.
Thuban loves cold places and snow. Most of the time they stay on mountains but sometimes they like to fly down and wandering around frozen rivers.

Thuban is a dedicated scholar, they spend their live studying the universe.

Trait

background story

Thuban is a hermit on a small, cold and mountainous planet, it's hard to find them in person, but the rumor says in the past, Thuban is a wise and knowledgeable scholar that give guidance to those who are lost in lives, many come to find Thuban when they need help and advice, or when they craving to learn from their knowledge.

Thuban and Helio were partners in research many years ago, they aim to discover the truth of the universe together, the ability to control and create aurora came from one of their experiment when they combine their magical power together. but later Helio found something else they wanted to protect so they left and gave up on research, Thuban were disappointed on how undedicated helio was and felt betrayed, thus cloistered themself and don't want to see Helio again.

everytime Thuban look up at the aurora, they still feel a bit of loneliness and melancholy.

Cosmic Chronicle

Cosmic Chronicle is a book written by Thuban, mainly about cosmology, and the laws of the universe. It recorded all the research Thuban made and the summary of all the documents they studied.
Thuban doesn't just let anyone access their studies, the ones who desire to read it must go through many of Thuban's challenges to prove their worth.
The book is not written on paper like regular books, it is written on the surface of a forever-frozen river with Thuban's special elixir, this frozen river is so long that is circled the whole planet, thus the whole planet is Thuban's book, but the words on it are usually not readable, they only lights up when Thuban make them to.

(I'm still not sure about the name of the book tho...)