Takdea Tetsuya who is about to play Sakamoto Ryoma role for the last time in his acting career met with real Ryoma who just slipped through time to present day Japan. He asked Ryoma to tell an episode of his life that no one ever heard before without hiding anything, only to be shocked it wasn't the same image of Sakamoto Ryoma that everyone knows.

Season 0 of House of the Dragon premiered on December 18, 2018.