A story through time—
It was possibly because she was bored with being a guardian spirit for such a long time, Vatin did everything Viviane C. Ceriel had never done, whether it was growing tomatoes, reading a fairytale to his unlovely brother, or even cleaning Salzaal's castle.
It was due to her boredom.
His tsundere older brother looked at him grumpily and grumbled at him at times, but when he looked at him with his sparkling innocent eyes, he turned away, causing the guardian spirit in the form of a boy to sigh rapidly, thinking he was really cute.
She had lived as Vatin for a short time before she died.
She was assassinated by the third crown prince because of the human issue of authority and the throne. When confronted with death, the goddess simply accepted it calmly. When the body she used in the mortal world died, her spirit returned to Avalon once more.
Viviane C. Ceriel could easily accept death and harbored no ill will toward the person who murdered her.