Since We Met

Haraya is the only child of two powerful kings, meaning she's next in line for the throne - and being almost 21, she's bound to hold the title of "Queen" soon. There's only one problem: she has yet to find a bride. If she doesn't soon, she will be betrothed to her Aro-Ace childhood friend, Marianne.
Chloe is a young orphan, taken in by the royal enchantress and learning under her. However, she soon discovers some hidden potential lying within her.
When the two meet on the night of Haraya's birthday, they find themselves in a trance - and it's no secret, either. With each passing day, with every letter sent, they find themselves falling deeper and deeper in love.
However, Haraya starts to notice her lover's letters to her are not only beginning to seem rather odd, she's also becoming increasingly more... distant. Suddenly, word gets around that Chloe has gone missing. What could've possibly happened to Chloe? Could it have something to do with the letters? Will Haraya find her lost lover in time? I guess you'll just have to find out.