Yotsuba Maya (四葉 真夜) is the younger twin-sister of Shiba Miya. She is the current Head of the Yotsuba Family. [1] She is one of the strongest Magicians of the modern era in the world, known as the "Queen of Night" and "Demon King of the Far East.both Maya and Miya were students of Kudou Retsu when they were young because of Retsu's closeness with Yotsuba Genzou. [9] Saegusa Kouichi was also under his tutelage.While she is actually in her 40's, her appearance gives off the impression that she's in her 30's. [1] She looks to be 30 years old but is actually 47 years old in February of 2097. [7] Unlike Miyuki's beauty that defies description, Maya is a woman full of feminine charms and enchanting mature beauty. [1] She wears a wine red formal one piece dress. [7] She is so fearsome that even her cousin, Kuroba Mitsugu, is terrified of her. It is mentioned that she has a good sense of humor and a willingness to join in on a good joke.When she was around twelve, Maya was kidnapped while visiting Taipei as part of a cultural exchange program sponsored by the Asian Branch of the International Magic Association. Her fiancé, Kouichi, who was with her during the kidnapping, lost an eye trying to save her. [11] Maya was raped and experimented on by her kidnappers from Dahan's infamous Kunlunfang Institute. [11] After she was recovered, Maya's elder sister, Yotsuba Miya, turned all of her experiences into information, separating the emotions from the memories to prevent the experience from overwhelming her sister's battered psyche. As a result, she claimed that Miya had killed her, as experiences are what make up a person and their personality.Due to that incident, Miya and Maya no longer had the warm sisterly bond they had shared before the incident. Maya also lost the ability to procreate due to the experiments, and her betrothal and relationship with Kouichi were called off (due to the loss of her emotional bonds as well as her inability to bear children). [11] Maya is single and has never married.After the events of the Dahan Incident, Maya and Miya's relationship became like a cold war and they avoided each other. This is due to Maya believing that her sister "killed" the person she was. When Tatsuya is born, Maya was happy to have the chance to take care of Tatsuya, but Miya understood that her sister had ulterior motives so the tension between them grew even more strained.