My Kingdom of Ash (BTS : Book 1 : Mahogany)

Kim Taehyung (Also known to other people the surname of Flame) and his little siblings live in the Kingdom of Flame(Also called a Dynasty), quite literally. The place is forever filled with chaos and fire, though now the disturbance ha them burning down to ash. The King and Queen were murdered in an attack by a close territory's Queen, who was then burnt to the ground. The irreversible curse prevents the 3 from taking the thrones. The curse was made years ago before Magicks were ruled out of order, making it impossible for any of the children to claim King or Queen while they weren't of age, 22 years old.

Min Yoongi- Prince of Wings Kingdom
Siblings Jung Hoseok and Jung DaWon - Sibling rulers of Hope Kingdom
Brothers Kim Seokjin and Kim Namjoon - for Crystal Snow Territory
Brothers Jeon Jungkook and Jeon Junghyun - Heirs of Tear Kingdom
Park Jimin and Park JiHyun - Rulers of 21st Kingdom (Serendipity)

The Flame Bordering Kingdoms are called 'The Ring'. They keep the chaotic dynasty contained and away from others. Every time 'Singularity' played, it meant war and death was upon someone. Flame went through Crystal Snow and burned a territory alive the last day that it played.

Nobody knows about the 3 heirs or about the curse. Nor do they know that Wings and Flame still actively practice Magicks.

The 3 keys have all run to different Kingdoms.
What's meant to happen now?