Guren no Ōdachi (紅蓮の大太刀?, Great Blade of Crimson) is an offensive Unrestricted Spell acquired by Shana during her late-night training. It manifests flames in a huge, sword-like shape to burn and cut opponents. To aid in her visualization in order to construct the manifestation, she would often coil her flames around the long sword Treasure Tool Nietono no Shana, but she could accomplish the manifestation bare-handed.


At full power, Guren no Ōdachi could instantly burn up Professor Dantalion's Coffer of Evening Party in one blow.

In the fight against Fecor, Shana demonstrated a new way of using it. Unlike previously where she was causing explosions by emitting flames, its form was at a very high temperature to the point of melting and was almost solid. The formed blade was several times taller than Shana herself.[1]

Shana didn't name this Unrestricted Spell when it was in its early stages, and simply called it the Ōdachi (大太刀?, Great Blade).

Later during the battle at Seireiden, Shana named this technique Danzai (断罪?, Condemnation) after one of the authorities of "Flame of Heaven" Alastor.


  • The name "Guren no Ōdachi" comes from the narrative, and was never named by Shana.



Unrestricted Spells
Offensive AsterDanzaiDraken's RoarEndanEternal PitfallFist of AtenGreat BreakthroughGripen's HowlGuren no KyowanGuren no ŌdachiHienImprovisational Poem of SlaughterInvernaIron Hammer of NesaKnightsLegionRa's Throwing StoneRainbow's Heaven SwordRubble GiantShadow IntrusionShinkuStigmaThunderbolt KickTōga
Defensive AlcázarCradle GardenKaikinMagnesia
Utility Anti-SealCity DevourerCryptaFūzetsuGuren no SōyokuHumanizeIllusionKaze no TenrinKey ThreadLabyrinthosLong-distance CommunicationNobiliacumOlfactory Sense of DesireQadesh's Blood SealQadesh's Heart ChamberRestorationShinpanTatsui no GenUnrestricted Spell Insignia of ReincarnationWater ManipulationYogasa
Miscellaneous Psalm of the Grand OrderPurifying FlameResummoningTuning
Universal Dragon TailGrammaticaMonument StrongholdPure CoffinQadesh's Blood PulseRibbonsSabaeru KazeSpecial AbilityTransformationWall of Miasmal Screen
Divine Summoning*
*Not Unrestricted Spells
Saiki Reisō (Black Misudare) • Shōhi GinseiTenpa Jōsai (Crimson Curtain)
Community content is available under CC-BY-SA unless otherwise noted.