On their way, Rein and his two girls did not have much trouble except for a few flying strange beasts who attacked them. But all of them were quite weak, so Luna was able to kill them alone by just waving her hands.
The single affinity that Luna was awakened was "Star". To Rein it sounded like a powerful ability but the royal family had a special bloodline where awakening the star affinity was not very rare.
This star affinity was especially useful for boosting other abilities. So without a second affinity, the true value of the star affinity could not be realised. That was the reason why Luna was not given much attention. If she had a second affinity no matter how common it was, she would have become a valuable member of the royal family and would be given a lot of attention as a potential future powerhouse.
