I just thought of something. .
I would really love the Tenkai to be an archaeologist/historian
The family is infamous for being a sort of like researcher. .
Wondering why infamous?
Let say the Tenkai is a male. . His family is well under control of the Evil empire.
This mean that the people disliking the Empire dislike the Tenkai family.
Note* The family is a bunch of nice people. .
How does he get the rune?
The Empire found an ancient ruin thus asking the Tenkai family to explore it. .
The Tenkai wander alone and found some symbol scribbled on the wall. .
as i say the family was a 'well-known' archaeologist, he manage to dicipher the symbol.
The when he open a passage to a hidden place. .
And deep inside he found a True Rune. . . He was chosen. . .
How he became the Empire enemy?
When he recieve the TR blessing, there was a bright light. .
the Empire soldier saw this too and report it. . That night the family was under attack. .
His family knew that they wanted the rune. . so the parent sacrifice so that the Tenkai
and his brother can escape. . That when the war started. ..
So, my thought on his background is an Archaeologist.
Whoa. .being an archaeologist, he could even manage to find source about Sindar. .