Rahnan was a grade-4 mage and was one of the few disciples of Nathan.
Unlike most mages, he had a kind and compassionate personality; he was like a bright light shining in the dark.
Abella studied under Nathan, and she frequently encountered Rahnan due to his frequent visits to Nathan.
Nathan favored Abella because of her extraordinary talent for summoning magic, but she was completely preoccupied with Rahnan because she had fallen in love with him.
Nathan wanted Abella to reach great heights and provide benefits to him when she grows up to be a strong wizard in return for his tutoring, but Abella wasn't making much progress as she was thinking about Rahnan all day long.
This was intolerable for Nathan.
Not only was Rahnan a great disappointment for Nathan, he was also stopping his other students from making progress.
Nathan took Rahnan as a disciple because he had the extremely rare 'light magic' aptitude.
