The Dearest of The Cursed TDTC

The first Prince of Asgard had returned home from his studies. He was the rightful prince to the throne but due to a special reason, it is not easy. Once he went for a hunting session with his siblings. And his youngest sister goes missing. The royals lose hope when they realize, she had wandered into the Forest of Caron which has a legend behind it. But she returns safely. She also tells him that she got a new friend. The prince does not believe her at first, but soon, he finds it more and more believable. What's more, it seems that he also had a past with this 'friend' long before he even went aboard for his studies....