taegi au | downfall 

Yoongi never wanted to become a king and Taehyung is just an ordinary man. Due to their statuses, their special relationship is forbidden. Yoongi decided to escape and disguise as a normal person to find Taehyung. Taehyung is always waiting for Yoongi's letters and he found out his plan. The noblemen knew about the disappearance of the king and his relationship with Taehyung.
It's already late for Yoongi to save him.