Sirius Vermillion vs Ein Abgrund

Sirius Vermillion vs Ein Abgrund is a fight between the Emperor of Vermillion, Sirius Vermillion and the ally of Or-Gaule Ein Abgrund. It takes place during the Battle of Kardia, though not in the battlefield.

Prologue
Before the fight, Sirius and Astrea are in the Vermillion Palace, watching the ongoing Battle of Kardia, where the Vermillion forces are succeeding on freeing the Cradleland soldiers, through a monitor. Suddenly, Sirius and Astrea are then approached by a mysterious woman, wearing a black dress. This woman is named Ein Abgrund, and she's an ally of All-Goal, telling that she's here to bring them flowers for their funerals. The guards who are in the room, fall unconscious, affected by Ein's Sleeping Beauty ability. Astrea also falls to the ground, unable to stand up to Ein. Sirius though manages to fend of Ein's ability, and attacks her.

Battle
Sirius charges at Ein, slashing at her with his Device. Ein though easily dodges the attack. Sirius questions why All-Goal and his allies have decided to oppose Vermillion, with Ein telling it's because they were bored. Ein tells Sirius, she loves the beauty created from human lives, and thought she could achieve this beauty in Rebellion. She though was disappointed, deciding to join All-Goal to achieve more beauty. Sirius then attacks Ein with Gold Eclipse, a flaming slash, which Ein also dodges easily.

Ein then removes the glove covering her right hand, with vines sprouting from her torn hand. Ein then furiously attacks Sirius with these vines, delivering multiple injuries to him. Sirius falls to the ground, covered in his own blood. Ein then uses Bloody Mary, ejecting a seed at Sirius, which will tear him apart from the inside. The seed though is repelled by an invisible barrier. Ein attempts to attack Sirius, but her attack is also reflected. It's revealed that Sirius is being protected by Yui Tatara, who is masquerading as a maid in the Vermillion Palace.

Epilogue
Yui tells that she is here to kill Ein, who had killed the entire Abgrund Family and their clients. Yui wants to clear the family's image, by defeating Ein. Before the two can start their fight though, they are interrupted by Lunaeyes', seeing it through the monitor. Ein then retreats, with Yui staying in the palace.