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|Novel||Short Story 2|
Helix (ヘリックス, Herikkusu; ; ; ) is a Legion that neighbors Prominence territory. In short story 2, bundled with the eight Blu-Ray volume of the anime, six members are depicted in combat with Prominence, with whom they have done a Territory Battle with every weekend in June. The Legion is based in Itabashi.
Beryllium Coil in particular is lauded as a tactical genius, making the Legion a formidable opponent in battle.