diff --git a/src/common/Common.h b/src/common/Common.h
index 5dde56a3..8feeab1c 100644
--- a/src/common/Common.h
+++ b/src/common/Common.h
@@ -583,7 +583,7 @@ namespace Sapphire::Common
     TacticsPoints = 5,
     StatusEffect = 10,
     WARGauge = 22,
-//    DRKGauge = 25,
+    DRKGauge = 25,
 //    AetherflowStack = 30,
 //    Status = 32,
     PLDGauge = 41,
@@ -1079,6 +1079,7 @@ namespace Sapphire::Common
     GainJobResource = 8,
     SelfHeal = 16,
     DamageFallOff = 32,
+    GainJobTimer = 64,
   };
 
   enum ActionBonusEffectRequirement : uint8_t
@@ -1185,9 +1186,9 @@ namespace Sapphire::Common
     struct
     {
       uint8_t blood;
-      uint16_t darksideTimeRemaining;
+      uint16_t darksideTimer;
       uint8_t darkArts;
-      uint16_t shadowTimeRemaining;
+      uint16_t shadowTimer;
     } drk;
     struct
     {
diff --git a/src/scripts/action/war/ActionInnerRelease7389.cpp b/src/scripts/action/war/ActionInnerRelease7389.cpp
deleted file mode 100644
index 9f142c42..00000000
--- a/src/scripts/action/war/ActionInnerRelease7389.cpp
+++ /dev/null
@@ -1,38 +0,0 @@
-#include <Script/NativeScriptApi.h>
-#include <ScriptObject.h>
-#include <Actor/Player.h>
-#include <Action/Action.h>
-#include <Math/CalcStats.h>
-
-using namespace Sapphire;
-using namespace Sapphire::StatusEffect;
-
-const uint16_t STATUS_ID_INNER_RELEASE = 1177;
-
-class ActionInnerRelease7389 :
-  public ScriptAPI::ActionScript
-{
-public:
-  ActionInnerRelease7389() :
-    ScriptAPI::ActionScript( 7389 )
-  {
-  }
-
-  void onExecute( Sapphire::World::Action::Action& action ) override
-  {
-    auto pSource = action.getSourceChara();
-    assert( pSource );
-
-    World::Action::StatusEffectEntry effectEntry;
-    effectEntry.effectType = static_cast< uint32_t >( Common::StatusEffectType::CritDHRateBonus );
-    effectEntry.effectValue1 = static_cast< int32_t >( Common::ActionTypeFilter::Physical );
-    effectEntry.effectValue2 = 100;
-    effectEntry.effectValue3 = 100;
-    auto pEffect = Sapphire::StatusEffect::make_StatusEffect( STATUS_ID_INNER_RELEASE, action.getSourceChara(), pSource, 10000, 3000 );
-    pEffect->replaceEffectEntry( effectEntry );
-    pEffect->setParam( 65436 );
-    action.getEffectbuilder()->applyStatusEffect( pSource, action.getSourceChara(), pEffect, 0 );
-  }
-};
-
-EXPOSE_SCRIPT( ActionInnerRelease7389 );
\ No newline at end of file
diff --git a/src/world/Action/Action.cpp b/src/world/Action/Action.cpp
index 1f644b96..dc5585c4 100644
--- a/src/world/Action/Action.cpp
+++ b/src/world/Action/Action.cpp
@@ -125,7 +125,30 @@ bool Action::Action::init()
     {
       if( entry.second->getParam() == 65436 ) // todo: decode this shit and figure out exact percentage to apply to primary cost, this magic number is 0%
       {
-        setPrimaryCost( Common::ActionPrimaryCostType::None, 0 );
+        /*
+        Since the client is displaying correctly without additional data, there should be a "primary primary cost type" defined for each class.
+        In the case of 65436, on whm, mp cost is removed, on drk, blood cost is removed but mp cost remains.
+        */
+        auto affectedPrimaryCost = Common::ActionPrimaryCostType::MagicPoints;
+        switch( m_pSource->getClass() )
+        {
+          case Common::ClassJob::Marauder:
+          case Common::ClassJob::Warrior:
+          {
+            affectedPrimaryCost = Common::ActionPrimaryCostType::WARGauge;
+            break;
+          }
+          case Common::ClassJob::Darkknight:
+          {
+            affectedPrimaryCost = Common::ActionPrimaryCostType::DRKGauge;
+            break;
+          }
+        }
+        if( m_primaryCostType == affectedPrimaryCost )
+        {
+          setPrimaryCost( Common::ActionPrimaryCostType::None, 0 );
+        }
+        
         break;
       }
     }
@@ -612,6 +635,26 @@ void Action::Action::buildEffects()
                   player->gaugeWarSetIb( std::min( 100, player->gaugeWarGetIb() + m_lutEntry.bonusDataByte4 ) );
                   break;
                 }
+                case Common::ClassJob::Darkknight:
+                {
+                  player->gaugeDrkSetBlood( std::min( 100, player->gaugeDrkGetBlood() + m_lutEntry.bonusDataByte4 ) );
+                  break;
+                }
+              }
+            }
+          }
+
+          if( m_lutEntry.bonusEffect & Common::ActionBonusEffect::GainJobTimer )
+          {
+            if( checkActionBonusRequirement() )
+            {
+              switch( static_cast< Common::ClassJob >( m_lutEntry.bonusDataByte3 ) )
+              {
+                case Common::ClassJob::Darkknight:
+                {
+                  player->gaugeDrkSetDarkSideTimer( std::min( 60000, player->gaugeDrkGetDarkSideTimer() + m_lutEntry.bonusDataUInt16L ), true );
+                  break;
+                }
               }
             }
           }
@@ -862,6 +905,23 @@ bool Action::Action::primaryCostCheck( bool subtractCosts )
       return false;
     }
 
+    case Common::ActionPrimaryCostType::DRKGauge:
+    {
+      auto pPlayer = m_pSource->getAsPlayer();
+      if( pPlayer )
+      {
+        auto blood = pPlayer->gaugeDrkGetBlood();
+        if( blood >= m_primaryCost )
+        {
+          if( subtractCosts )
+            pPlayer->gaugeDrkSetBlood( blood - m_primaryCost );
+
+          return true;
+        }
+      }
+      return false;
+    }
+
     // free casts, likely just pure ogcds
     case Common::ActionPrimaryCostType::None:
     {
diff --git a/src/world/Action/ActionLutData.cpp b/src/world/Action/ActionLutData.cpp
index 02a6fc64..faac7a36 100644
--- a/src/world/Action/ActionLutData.cpp
+++ b/src/world/Action/ActionLutData.cpp
@@ -225,12 +225,12 @@ ActionLut::Lut ActionLut::m_actionLut =
   { 7387, { 450, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } },
 
   //Shake It Off, シェイクオフ
-  //applies to targets: Shake It Off, シェイクオフ, duration 0, param 0
-  { 7388, { 0, 0, 0, 0, 0, 0, 0, 1457, 0, 0, 0, 0, 0 } },
+  //applies to targets: Shake It Off, シェイクオフ, duration 15000, param 0
+  { 7388, { 0, 0, 0, 0, 0, 0, 0, 1457, 15000, 0, 0, 0, 0 } },
 
   //Inner Release, 原初の解放
-  //comment: status removed need script
-  { 7389, { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } },
+  //applies to self: Inner Release, 原初の解放, duration 10000, param 65436
+  { 7389, { 0, 0, 0, 0, 1177, 10000, 65436, 0, 0, 0, 0, 0, 0 } },
 
   //Chaotic Cyclone, カオティックサイクロン
   //has damage: potency 400, combo potency 0, directional potency 0
@@ -271,13 +271,14 @@ ActionLut::Lut ActionLut::m_actionLut =
 
   //Souleater, ソウルイーター
   //has damage: potency 100, combo potency 400, directional potency 0
-  //has heal: potency 300
-  { 3632, { 100, 400, 0, 300, 0, 0, 0, 0, 0, 0, 0, 0, 0 } },
+  //has bonus effect: 24, 169869612
+  //bonus effect requirement: RequireCorrectCombo
+  { 3632, { 100, 400, 0, 0, 0, 0, 0, 0, 0, 0, 24, 1, 169869612 } },
 
   //Flood of Darkness, 暗黒の波動
   //has damage: potency 250, combo potency 0, directional potency 0
-  //applies to self: Darkside, 暗黒, duration 30000, param 0
-  { 16466, { 250, 0, 0, 0, 751, 30000, 0, 0, 0, 0, 0, 0, 0 } },
+  //has bonus effect: GainJobTimer, 2127152
+  { 16466, { 250, 0, 0, 0, 0, 0, 0, 0, 0, 0, 64, 0, 2127152 } },
 
   //Blood Weapon, ブラッドウェポン
   //applies to self: Blood Weapon, ブラッドウェポン, duration 10000, param 0
@@ -289,8 +290,8 @@ ActionLut::Lut ActionLut::m_actionLut =
 
   //Edge of Darkness, 暗黒の剣
   //has damage: potency 350, combo potency 0, directional potency 0
-  //applies to self: Darkside, 暗黒, duration 30000, param 0
-  { 16467, { 350, 0, 0, 0, 751, 30000, 0, 0, 0, 0, 0, 0, 0 } },
+  //has bonus effect: GainJobTimer, 2127152
+  { 16467, { 350, 0, 0, 0, 0, 0, 0, 0, 0, 0, 64, 0, 2127152 } },
 
   //Dark Mind, ダークマインド
   //applies to targets: Dark Mind, ダークマインド, duration 10000, param 0
@@ -328,8 +329,8 @@ ActionLut::Lut ActionLut::m_actionLut =
   { 7391, { 210, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } },
 
   //Delirium, ブラッドデリリアム
-  //applies to self: Delirium, ブラッドデリリアム, duration 10000, param 0
-  { 7390, { 0, 0, 0, 0, 1972, 10000, 0, 0, 0, 0, 0, 0, 0 } },
+  //applies to self: Delirium, ブラッドデリリアム, duration 10000, param 65436
+  { 7390, { 0, 0, 0, 0, 1972, 10000, 65436, 0, 0, 0, 0, 0, 0 } },
 
   //The Blackest Night, ブラックナイト
   //applies to self: Blackest Night, ブラックナイト, duration 0, param 0
@@ -343,8 +344,8 @@ ActionLut::Lut ActionLut::m_actionLut =
 
   //Edge of Shadow, 漆黒の剣
   //has damage: potency 500, combo potency 0, directional potency 0
-  //applies to self: Darkside, 暗黒, duration 30000, param 0
-  { 16470, { 500, 0, 0, 0, 751, 30000, 0, 0, 0, 0, 0, 0, 0 } },
+  //has bonus effect: GainJobTimer, 2127152
+  { 16470, { 500, 0, 0, 0, 0, 0, 0, 0, 0, 0, 64, 0, 2127152 } },
 
   //Dark Missionary, ダークミッショナリー
   //applies to targets: Dark Missionary, ダークミッショナリー, duration 15000, param 0
@@ -2834,6 +2835,11 @@ ActionLut::Lut ActionLut::m_actionLut =
   //has damage: potency 100, combo potency 0, directional potency 0
   { 8, { 100, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } },
 
+  //Flood of Shadow, 漆黒の波動
+  //has damage: potency 300, combo potency 0, directional potency 0
+  //has bonus effect: GainJobTimer, 2127152
+  { 16469, { 300, 0, 0, 0, 0, 0, 0, 0, 0, 0, 64, 0, 2127152 } },
+
 };
 
 ActionLut::StatusEffectTable ActionLut::m_statusEffectTable =
diff --git a/src/world/Actor/Player.cpp b/src/world/Actor/Player.cpp
index 2a70dbb4..8e97fce2 100644
--- a/src/world/Actor/Player.cpp
+++ b/src/world/Actor/Player.cpp
@@ -1192,7 +1192,25 @@ void Sapphire::Entity::Player::update( uint64_t tickCount )
           gaugeWhmSetLilyTimer( 0 );
         }
       }
-    };
+      break;
+    }
+    case Common::ClassJob::Darkknight:
+    {
+      auto dsTimer = gaugeDrkGetDarkSideTimer();
+      if( dsTimer > interval )
+        dsTimer -= interval;
+      else
+        dsTimer = 0;
+      gaugeDrkSetDarkSideTimer( dsTimer );
+
+      auto shadowTimer = gaugeDrkGetShadowTimer();
+      if( shadowTimer > interval )
+        shadowTimer -= interval;
+      else
+        shadowTimer = 0;
+      gaugeDrkSetShadowTimer( shadowTimer );
+      break;
+    }
   }
 
   Chara::update( tickCount );
@@ -2310,4 +2328,57 @@ void Sapphire::Entity::Player::gaugeWhmSetLilyTimer( uint16_t value, bool sendPa
 uint16_t Sapphire::Entity::Player::gaugeWhmGetLilyTimer()
 {
   return m_gauge.whm.lilyTimer;
+}
+
+void Sapphire::Entity::Player::gaugeDrkSetBlood( uint8_t value )
+{
+  assert( value >= 0 && value <= 100 );
+  auto oldValue = gaugeDrkGetBlood();
+  m_gauge.drk.blood = value;
+  if( oldValue != value )
+    sendActorGauge();
+}
+
+uint8_t Sapphire::Entity::Player::gaugeDrkGetBlood()
+{
+  return m_gauge.drk.blood;
+}
+
+void Sapphire::Entity::Player::gaugeDrkSetDarkArts( bool value )
+{
+  auto oldValue = gaugeDrkGetDarkArts();
+  m_gauge.drk.darkArts = value ? 1 : 0;
+  if( oldValue != value )
+    sendActorGauge();
+}
+
+bool Sapphire::Entity::Player::gaugeDrkGetDarkArts()
+{
+  return m_gauge.drk.darkArts > 0;
+}
+
+void Sapphire::Entity::Player::gaugeDrkSetDarkSideTimer( uint16_t value, bool sendPacket )
+{
+  assert( value >= 0 && value <= 60000 );
+  m_gauge.drk.darksideTimer = value;
+  if( sendPacket )
+    sendActorGauge();
+}
+
+uint16_t Sapphire::Entity::Player::gaugeDrkGetDarkSideTimer()
+{
+  return m_gauge.drk.darksideTimer;
+}
+
+void Sapphire::Entity::Player::gaugeDrkSetShadowTimer( uint16_t value, bool sendPacket )
+{
+  assert( value >= 0 && value <= 60000 );
+  m_gauge.drk.shadowTimer = value;
+  if( sendPacket )
+    sendActorGauge();
+}
+
+uint16_t Sapphire::Entity::Player::gaugeDrkGetShadowTimer()
+{
+  return m_gauge.drk.shadowTimer;
 }
\ No newline at end of file
diff --git a/src/world/Actor/Player.h b/src/world/Actor/Player.h
index 480d13fb..a3da8781 100644
--- a/src/world/Actor/Player.h
+++ b/src/world/Actor/Player.h
@@ -988,6 +988,15 @@ namespace Sapphire::Entity
     void gaugeWhmSetLilyTimer( uint16_t value, bool sendPacket = false );
     uint16_t gaugeWhmGetLilyTimer();
 
+    void gaugeDrkSetBlood( uint8_t value );
+    uint8_t gaugeDrkGetBlood();
+    void gaugeDrkSetDarkArts( bool value );
+    bool gaugeDrkGetDarkArts();
+    void gaugeDrkSetDarkSideTimer( uint16_t value, bool sendPacket = false );
+    uint16_t gaugeDrkGetDarkSideTimer();
+    void gaugeDrkSetShadowTimer( uint16_t value, bool sendPacket = false );
+    uint16_t gaugeDrkGetShadowTimer();
+
     //////////////////////////////////////////////////////////////////////////////////////////////////////
 
     Common::HuntingLogEntry& getHuntingLogEntry( uint8_t index );
diff --git a/src/world/Math/CalcStats.cpp b/src/world/Math/CalcStats.cpp
index 89f36725..406c7c0f 100644
--- a/src/world/Math/CalcStats.cpp
+++ b/src/world/Math/CalcStats.cpp
@@ -584,10 +584,21 @@ std::pair< float, Sapphire::Common::ActionHitSeverityType > CalcStats::calcAutoA
     }
   }
 
-  constexpr auto format = "auto attack: pot: {} aa: {} ap: {} det: {} ten: {} = {}";
-
-  if( auto player = const_cast< Entity::Chara& >( chara ).getAsPlayer() )
+  if( chara.isPlayer() )
   {
+    auto player = const_cast< Entity::Chara& >( chara ).getAsPlayer();
+    switch( player->getClass() )
+    {
+      case Common::ClassJob::Darkknight:
+      {
+        if( player->gaugeDrkGetDarkSideTimer() > 0 )
+        {
+          factor *= 1.1f;
+        }
+        break;
+      }
+    }
+    constexpr auto format = "auto attack: pot: {} aa: {} ap: {} det: {} ten: {} = {}";
     player->sendDebug( format, pot, aa, ap, det, ten, factor );
   }
 
@@ -706,6 +717,22 @@ std::pair< float, Sapphire::Common::ActionHitSeverityType > CalcStats::calcActio
     }
   }
 
+  if( chara.isPlayer() )
+  {
+    auto player = const_cast< Entity::Chara& >( chara ).getAsPlayer();
+    switch( player->getClass() )
+    {
+      case Common::ClassJob::Darkknight:
+      {
+        if( player->gaugeDrkGetDarkSideTimer() > 0 )
+        {
+          factor *= 1.1f;
+        }
+        break;
+      }
+    }
+  }
+
   return std::pair( factor, hitType );
 }