A former Meister Otome contracted to the King of Windbloom. She vanished fourteen years ago during the attack on the castle and was presumed dead. She was the former bearer of the Blue Sky Sapphire and is Arika's mother. Sergay had an immense crush on her years ago, partially motivating his decision to sponsor Arika at Garderobe. It is later revealed that she was killed by Aswad in a fight with Rado. Her remains were then stolen by Schwarz and are being used by John Smith to create a new type of Otome. As of episode 20, it is suggested that Rena's body acts as Fumi's body did and is the shinso for Artai's army of Otome. In episode 23, she is revealed as a descendant of Otome's version of Alissa Searrs, so Rena's surname, "Sayers," is likely a phonetic derivative of Searrs that occurred over the centuries. In the final battle, Arika destroys the machine that encases her body. Her soul is freed and as a final act of love to her only daughter, gives Arika her Meister Robe, Ultimate Blue Sky.