Who Is Alas Ramus?

Alas=Ramus (アラス・ラムス, Arasu Ramusu) is the appointed daughter of Sadao Maou and Emi Yusa. She is a fragment of Yesod, one of the elements of Sephirot.

Does EMI and Maou end up together?

While they still remained a little antagonistic to each other, the two eventually came to a truce. They have since come to understand each other better, and regularly join forces to combat the continued emergence of threats from Ente Isla that pose danger to their new home and friends.

What happened to Alas Ramus?

Hataraku Mao-sama! Light Novel Volume 3

Lailah opened a Gate and tossed it through it. ... By the end of Volume 3, she had merged herself with Emi's sword, Evolving Holy Sword "Better Half". Because of this, Alas=Ramus lives with Emi, who occasionally brings her over to Villa Rosa Sasazuka to see Maou.