diff --git a/internal/characters/fischl/asc.go b/internal/characters/fischl/asc.go
index a934f4750..bab57f4b3 100644
--- a/internal/characters/fischl/asc.go
+++ b/internal/characters/fischl/asc.go
@@ -6,10 +6,16 @@ import (
 	"github.com/genshinsim/gcsim/pkg/core/combat"
 	"github.com/genshinsim/gcsim/pkg/core/event"
 	"github.com/genshinsim/gcsim/pkg/core/info"
+	"github.com/genshinsim/gcsim/pkg/core/player/character"
 	"github.com/genshinsim/gcsim/pkg/enemy"
+	"github.com/genshinsim/gcsim/pkg/modifier"
 )
 
-const a4IcdKey = "fischl-a4-icd"
+const (
+	a4IcdKey   = "fischl-a4-icd"
+	hexAtkpKey = "fischl-hexerei-atkp"
+	hexEMKey   = "fischl-hexerei-em"
+)
 
 // A1 is not implemented:
 // TODO: When Fischl hits Oz with a fully-charged Aimed Shot, Oz brings down Thundering Retribution, dealing AoE Electro DMG equal to 152.7% of the arrow's DMG.
@@ -74,3 +80,95 @@ func (c *char) a4() {
 	c.Core.Events.Subscribe(event.OnQuicken, a4cbNoGadget, "fischl-a4")
 	c.Core.Events.Subscribe(event.OnAggravate, a4cbNoGadget, "fischl-a4")
 }
+
+func (c *char) hexInit() {
+	if !c.IsHexerei {
+		return
+	}
+
+	if c.Core.Player.GetHexereiCount() < 2 {
+		return
+	}
+
+	mAtkp := make([]float64, attributes.EndStatType)
+	mAtkp[attributes.ATKP] = 0.225
+	mEM := make([]float64, attributes.EndStatType)
+	mEM[attributes.EM] = 90
+
+	for _, other := range c.Core.Player.Chars() {
+		if other.Index() == c.Index() {
+			continue
+		}
+
+		other.AddStatMod(character.StatMod{
+			Base:         modifier.NewBase(hexAtkpKey, -1),
+			AffectedStat: attributes.ATKP,
+			Amount: func() []float64 {
+				if c.Core.Player.Active() != other.Index() {
+					return nil
+				}
+				if !c.StatModIsActive(hexAtkpKey) {
+					return nil
+				}
+				mAtkp[attributes.ATKP] = 0.225 * (1 + c.c6HexBonus())
+				return mAtkp
+			},
+		})
+
+		other.AddStatMod(character.StatMod{
+			Base:         modifier.NewBase(hexEMKey, -1),
+			AffectedStat: attributes.EM,
+			Amount: func() []float64 {
+				if c.Core.Player.Active() != other.Index() {
+					return nil
+				}
+				if !c.StatModIsActive(hexEMKey) {
+					return nil
+				}
+				mEM[attributes.EM] = 90 * (1 + c.c6HexBonus())
+				return mEM
+			},
+		})
+	}
+
+	atkpHook := func(args ...any) {
+		if _, ok := args[0].(*enemy.Enemy); !ok {
+			return
+		}
+		// do nothing if oz not on field
+		if !c.StatusIsActive(ozActiveKey) {
+			return
+		}
+
+		c.AddStatMod(character.StatMod{
+			Base:         modifier.NewBaseWithHitlag(hexAtkpKey, 10*60),
+			AffectedStat: attributes.ATKP,
+			Amount: func() []float64 {
+				mAtkp[attributes.ATKP] = 0.225 * (1 + c.c6HexBonus())
+				return mAtkp
+			},
+		})
+	}
+	emHook := func(args ...any) {
+		if _, ok := args[0].(*enemy.Enemy); !ok {
+			return
+		}
+		// do nothing if oz not on field
+		if !c.StatusIsActive(ozActiveKey) {
+			return
+		}
+
+		c.AddStatMod(character.StatMod{
+			Base:         modifier.NewBaseWithHitlag(hexEMKey, 10*60),
+			AffectedStat: attributes.EM,
+			Amount: func() []float64 {
+				mEM[attributes.EM] = 90 * (1 + c.c6HexBonus())
+				return mEM
+			},
+		})
+	}
+
+	c.Core.Events.Subscribe(event.OnOverload, atkpHook, "fischl-hex-ol")
+	c.Core.Events.Subscribe(event.OnElectroCharged, emHook, "fischl-hex-ec")
+	c.Core.Events.Subscribe(event.OnLunarCharged, emHook, "fischl-hex-lc")
+}
diff --git a/internal/characters/fischl/cons.go b/internal/characters/fischl/cons.go
index 3f0a61db7..7277375a0 100644
--- a/internal/characters/fischl/cons.go
+++ b/internal/characters/fischl/cons.go
@@ -7,6 +7,8 @@ import (
 	"github.com/genshinsim/gcsim/pkg/core/info"
 )
 
+const c6HexereiKey = "fischl-c6-hexerei"
+
 func (c *char) c6Wave() {
 	ai := info.AttackInfo{
 		ActorIndex: c.Index(),
@@ -33,4 +35,18 @@ func (c *char) c6Wave() {
 		),
 		c.ozTravel,
 	)
+
+	c.AddStatus(c6HexereiKey, 10*60, true)
+}
+
+func (c *char) c6HexBonus() float64 {
+	if c.Base.Cons < 6 {
+		return 0
+	}
+
+	if !c.StatusIsActive(c6HexereiKey) {
+		return 0
+	}
+
+	return 1
 }
diff --git a/internal/characters/fischl/fischl.go b/internal/characters/fischl/fischl.go
index 3dd87239d..ae55fabf1 100644
--- a/internal/characters/fischl/fischl.go
+++ b/internal/characters/fischl/fischl.go
@@ -46,6 +46,13 @@ func NewChar(s *core.Core, w *character.CharWrapper, p info.CharacterProfile) er
 		c.ozTravel = travel
 	}
 
+	hex, ok := p.Params["hexerei"]
+	if !ok {
+		// default hexerei is enabled
+		hex = 1
+	}
+	c.IsHexerei = (hex != 0)
+
 	w.Character = &c
 
 	return nil
@@ -53,7 +60,7 @@ func NewChar(s *core.Core, w *character.CharWrapper, p info.CharacterProfile) er
 
 func (c *char) Init() error {
 	c.a4()
-
+	c.hexInit()
 	if c.Base.Cons >= 6 {
 		w, err := minazuki.New(
 			minazuki.WithMandatory(keys.Fischl, "fischl c6", ozActiveKey, "", 60, c.c6Wave, c.Core),
diff --git a/pkg/core/player/character/character.go b/pkg/core/player/character/character.go
index b227a92c0..5fc2bb681 100644
--- a/pkg/core/player/character/character.go
+++ b/pkg/core/player/character/character.go
@@ -99,6 +99,7 @@ type CharWrapper struct {
 	SkillCon  int
 	BurstCon  int
 	HasArkhe  bool
+	IsHexerei bool
 	Moonsign  int
 
 	Equip struct {
diff --git a/pkg/core/player/player.go b/pkg/core/player/player.go
index bc5b9e3b4..7c806c2cd 100644
--- a/pkg/core/player/player.go
+++ b/pkg/core/player/player.go
@@ -406,3 +406,14 @@ func (h *Handler) GetMoonsignLevel() int {
 	}
 	return count
 }
+
+func (h *Handler) GetHexereiCount() int {
+	count := 0
+	for _, char := range h.chars {
+		if char.IsHexerei {
+			count++
+		}
+	}
+
+	return count
+}