Yoshino Sōma

is the one of the Bounts and Jin Kariya's former wife.

Character Outline
Yoshino is a slim woman with long brown hair. Yoshino claims to oppose her superior and former lover, Jin Kariya. She resembles Uryū Ishida's mother in appearance, but it is stated that the Bounts can not produce life. Yoshino seems to be the exception to the rule, as it was stated that she could reproduce. Yoshino also bears a great resemblance to Ran'Tao, the creator of the Bounts. The reason for their resemblance is because Yoshino is a copy of Ran'Tao, since the Bounts are artificial souls that were created based on Shinigami souls. She merges with Goethe after Kariya removes her seal, and dies when she is impaled through the chest by Kariya.

Doll
is Yoshino Sōma's doll. It takes the form of a claw (on her left hand) and bracelet (on her right hand) when sealed. To unseal Goethe, Yoshino strikes the two pieces together to create a spark, which releases him. Goethe is a fire elemental, able to create and control flame. While mostly humanoid in appearance, it has no legs. It can't be attacked physically, being made of flame, and reforms if dispersed. Hybrid Being In Yoshino's last moments, she and Goethe merge to create a stronger, hybrid being, allowing Yoshino to control fire herself.The battle was short but intense from both sides.Sadly, everything goes according to Kariya's plans: she is impaled through the chest and after that she dies and he transmutes her soul to create new Dolls, called bitto. 

Trivia

 * It is possible that Yoshino's doll is named after Goethe, the German polymath.