Hyakuya Sect Assassins

A group of Hyakuya Sect warriors descended onto the grounds of First Shibuya High School in a surprise attack which involved them murdering the students on the school field. Unnamed characters in Seraph of the End, they appear in the Seraph of the End: Guren Ichinose: Catastrophe at Sixteen manga and were working with Saitō.

Appearance
Their short dark hair was swept back over their heads. Their formal attire consisted of a dark suit were the jacket reached down to the back of their legs.

Personality
Willing to murder young people, they ignore the pleas of a student to not kill them.

History
At some point they joined the Hyakuya Sect and gained experience in fighting with swords. Evidently they were involved with plans involving students at First Shibuya High.

Story
After a laser guided explosion occurs on the grounds of First Shibuya High, at least ten agents drop from the air with their swords drawn. Landing around Guren, students are slashed at as they begin killing indiscriminately. Members run through the smoke to approach targets.

Saitō
From Saitō’s presence they were acting in accordance with his orders where he said everyone will die. As humans themselves, whether they knew it or not they were willing to work with a second progenitor vampire. From Saito's words that Guren and Shinya Hīragi were being distracted it is likely they had operations they were partaking in elsewhere as well.

Weapons

 * Some members wield two short tanto style swords.