Requiem of the Rose King - Season 1 - Eps 21: It should still be in time now.
Buckingham, determined to rebel, tries to win the cooperation of Bishop Ely and Stanley. Meanwhile, Richmond advises his father-in-law Stanley of the conditions under which he will join the rebellion. Those conditions: The death of King Edward V and his brother, who are imprisoned in the Tower of London. Buckingham believes Richard III, and no one else, must commit the murders. At the same time, Richard enters York and waits for Buckingham, who is expected to come. However, after the coronation, Richard is visited by the assassin Tyrell.
About Requiem of the Rose King

Title: Requiem of the Rose King
First Air Date: 2022-01-09
Last Air Date: 2022-06-26
Status: Ended
Rating: 4.9/10 (from 8 votes)
Language: JA
Seasons: 2
Total Episodes: 24
Network: Tokyo MX
Genres: Animation, Drama, Action & Adventure
Production Companies: J.C.STAFF, Lantis, Bandai Namco Arts, Hakuhodo DY Music & Pictures, Akita Shoten, Bandai Namco Live Creative
Synopsis
The crown of England has been hotly contested throughout history, and in the Middle Ages, a series of great civil wars became known as the War of the Roses. Claiming a right to the throne, the Duke of York seeks to unseat King Henry VI and his heir in order to become king himself.
Cast

Mitsuki Saiga
Richard (voice)

Hikaru Midorikawa
Henry (voice)

Show Hayami
Richard, Duke of York (voice)

Kohsuke Toriumi
Edward (voice)

Yasuaki Takumi
George, Duke of Clarence (voice)

Satoshi Mikami
the Earl of Warwick (voice)

Satoshi Hino
William Catesby (voice)

Sayaka Ohara
Queen Margaret (voice)

Kohei Amasaki
Edward of Westminster (voice)

Hochu Otsuka
narration (voice)