diff --git a/src/main/kotlin/net/hareworks/hcu/items/App.kt b/src/main/kotlin/net/hareworks/hcu/items/App.kt
index 10b2147..a667a99 100644
--- a/src/main/kotlin/net/hareworks/hcu/items/App.kt
+++ b/src/main/kotlin/net/hareworks/hcu/items/App.kt
@@ -9,6 +9,7 @@ import net.hareworks.hcu.items.registry.ComponentRegistry
 import net.hareworks.hcu.items.content.items.TestItem 
 import net.hareworks.hcu.items.content.items.GrapplingItem
 import net.hareworks.hcu.items.content.items.MagnetItem
+import net.hareworks.hcu.items.content.items.AutoFeederItem
 import net.hareworks.hcu.items.content.components.GliderComponent
 import net.hareworks.hcu.items.content.components.DoubleJumpComponent
 import net.hareworks.hcu.items.content.components.BlinkComponent
@@ -41,6 +42,7 @@ public class App : JavaPlugin() {
 		ItemRegistry.register(TestItem())
 		ItemRegistry.register(GrapplingItem())
 		ItemRegistry.register(MagnetItem())
+		ItemRegistry.register(AutoFeederItem())
 		
 		// Register Components
 		ComponentRegistry.register(GliderComponent(this))
diff --git a/src/main/kotlin/net/hareworks/hcu/items/api/item/CustomItem.kt b/src/main/kotlin/net/hareworks/hcu/items/api/item/CustomItem.kt
index 0a14a52..15917d6 100644
--- a/src/main/kotlin/net/hareworks/hcu/items/api/item/CustomItem.kt
+++ b/src/main/kotlin/net/hareworks/hcu/items/api/item/CustomItem.kt
@@ -17,5 +17,6 @@ interface CustomItem {
     fun onEntityDamage(event: org.bukkit.event.entity.EntityDamageEvent) {}
     fun onPlayerMove(event: org.bukkit.event.player.PlayerMoveEvent) {}
     fun onItemHeld(event: org.bukkit.event.player.PlayerItemHeldEvent) {}
+    fun onFoodLevelChange(event: org.bukkit.event.entity.FoodLevelChangeEvent) {}
     fun onTick(player: org.bukkit.entity.Player, item: ItemStack) {}
 }
diff --git a/src/main/kotlin/net/hareworks/hcu/items/config/Config.kt b/src/main/kotlin/net/hareworks/hcu/items/config/Config.kt
index 9eea871..9695d5d 100644
--- a/src/main/kotlin/net/hareworks/hcu/items/config/Config.kt
+++ b/src/main/kotlin/net/hareworks/hcu/items/config/Config.kt
@@ -21,6 +21,7 @@ object Config {
     var doubleJump = DoubleJumpSettings()
     var veinMiner = VeinMinerSettings()
     var magnet = MagnetSettings()
+    var autoFeeder = AutoFeederSettings()
 
     /**
      * グローバル設定
@@ -54,6 +55,13 @@ object Config {
         var allowScrollChange: Boolean = true
     )
 
+    /**
+     * AutoFeederアイテム設定
+     */
+    data class AutoFeederSettings(
+        var hungerThreshold: Int = 10
+    )
+
     /**
      * VeinMinerコンポーネント設定
      */
@@ -100,6 +108,7 @@ object Config {
         loadDoubleJumpSettings(config)
         loadVeinMinerSettings(plugin, config)
         loadMagnetSettings(config)
+        loadAutoFeederSettings(config)
         
         saveDefaults(plugin, config)
     }
@@ -169,6 +178,15 @@ object Config {
         )
     }
 
+    /**
+     * AutoFeeder設定を読み込む
+     */
+    private fun loadAutoFeederSettings(config: FileConfiguration) {
+        autoFeeder = AutoFeederSettings(
+            hungerThreshold = config.getInt("items.auto_feeder.hunger_threshold", 10)
+        )
+    }
+
     /**
      * デフォルト設定を保存する
      */
@@ -183,6 +201,7 @@ object Config {
         config.addDefault("components.magnet.radius_base", 5.0)
         config.addDefault("components.magnet.radius_per_tier", 5.0)
         config.addDefault("components.magnet.allow_scroll_change", true)
+        config.addDefault("items.auto_feeder.hunger_threshold", 10)
         
         config.options().copyDefaults(true)
         plugin.saveConfig()
@@ -196,7 +215,7 @@ object Config {
         compatibleMaterials: MutableMap<Material, Set<Material>>
     ) {
         compatibleMaterials.clear()
-        val groups = config.getList("components.vein_miner.compatible_groups") as? List<*> ?: return
+        val groups = config.getList("components.vein_miner.compatible_groups") ?: return
         
         for (groupObj in groups) {
             val group = when (groupObj) {
diff --git a/src/main/kotlin/net/hareworks/hcu/items/content/items/AutoFeederItem.kt b/src/main/kotlin/net/hareworks/hcu/items/content/items/AutoFeederItem.kt
new file mode 100644
index 0000000..f05060a
--- /dev/null
+++ b/src/main/kotlin/net/hareworks/hcu/items/content/items/AutoFeederItem.kt
@@ -0,0 +1,215 @@
+package net.hareworks.hcu.items.content.items
+
+import net.hareworks.hcu.items.api.Tier
+import net.hareworks.hcu.items.api.item.AbstractItem
+import net.hareworks.hcu.items.config.Config
+import net.kyori.adventure.text.Component
+import net.kyori.adventure.text.format.NamedTextColor
+import org.bukkit.Material
+import org.bukkit.Particle
+import org.bukkit.Sound
+import org.bukkit.entity.Player
+import org.bukkit.event.entity.FoodLevelChangeEvent
+import org.bukkit.inventory.ItemStack
+import org.bukkit.inventory.meta.BundleMeta
+import io.papermc.paper.datacomponent.DataComponentTypes
+import io.papermc.paper.datacomponent.item.consumable.ConsumeEffect
+import org.slf4j.Logger
+import org.slf4j.LoggerFactory
+
+/**
+ * Auto Feeder (オートフィーダー)
+ * バンドルベースのアイテムで、満腹度が一定以下になると自動で中の食料を食べる
+ */
+class AutoFeederItem : AbstractItem("auto_feeder") {
+
+    override val maxTier: Int = 2
+
+    override fun buildItem(tier: Tier): ItemStack {
+        return ItemStack(Material.BUNDLE).apply {
+            val meta = itemMeta as? BundleMeta ?: return@apply
+            
+            val configInfo = Config.autoFeeder
+            val threshold = configInfo.hungerThreshold
+            
+            // ティアによる説明の違い
+            val activationDesc = when (tier.level) {
+                1 -> Component.text("左手に持っている時のみ発動", NamedTextColor.YELLOW)
+                2 -> Component.text("インベントリにあるだけで発動", NamedTextColor.GOLD)
+                else -> Component.text("左手に持っている時のみ発動", NamedTextColor.YELLOW)
+            }
+            
+            meta.displayName(Component.text("オートフィーダー", tier.color))
+            
+            meta.lore(listOf(
+                Component.empty(),
+                Component.text("満腹度が低下すると自動で食事", NamedTextColor.GRAY),
+                Component.text("バンドル内の食料を消費します", NamedTextColor.GRAY),
+                Component.empty(),
+                Component.text("【性能】", NamedTextColor.WHITE),
+                Component.text("ティア: ${tier.name}", tier.color),
+                Component.text("発動閾値: ${threshold}以下", NamedTextColor.GREEN),
+                activationDesc,
+                Component.empty(),
+                Component.text("バンドルに食料を入れて使用", NamedTextColor.AQUA)
+            ))
+            
+            itemMeta = meta
+        }
+    }
+
+    override fun onTick(player: Player, item: ItemStack) {
+
+        // 満腹度チェック
+        val configInfo = Config.autoFeeder
+        val threshold = configInfo.hungerThreshold
+        
+        if (player.foodLevel > threshold) return
+
+        // Tierによる発動条件チェック
+        val tier = getTier(item)
+        if (tier.level == 1) {
+            // Tier 1: 左手（オフハンド）に持っている時のみ
+            // まったく同じアイテムかチェック（参照または内容の一致）
+            if (item != player.inventory.itemInOffHand) return
+        }
+        // Tier 2: インベントリにあればOK（onTickが呼ばれている時点でインベントリ内にあると仮定）
+
+        // 食事処理を実行
+        feed(player, item)
+    }
+
+    private fun feed(player: Player, item: ItemStack) {
+        // バンドルから食料を取得して食べる
+        val bundleMeta = item.itemMeta as? BundleMeta ?: return
+        val contents = bundleMeta.items.toMutableList()
+        
+        // 食料アイテムを探す
+        val foodItem = contents.firstOrNull { it.type.isEdible } ?: return
+
+        // Food情報を取得
+        var nutrition = 0
+        var saturation = 0.0f
+        
+        if (foodItem.hasData(DataComponentTypes.FOOD)) {
+             val food = foodItem.getData(DataComponentTypes.FOOD)
+             if (food != null) {
+                 nutrition = food.nutrition()
+                 saturation = food.saturation()
+             }
+        }
+        
+        // 食料を消費
+        if (foodItem.amount > 1) {
+            foodItem.amount -= 1
+        } else {
+            contents.remove(foodItem)
+        }
+        bundleMeta.setItems(contents)
+        item.itemMeta = bundleMeta
+        
+        // 満腹度を回復
+        val newFood = (player.foodLevel + nutrition).coerceAtMost(20)
+        val newSaturation = (player.saturation + saturation).coerceAtMost(newFood.toFloat())
+        
+        player.foodLevel = newFood
+        player.saturation = newSaturation
+        
+        // 特殊効果を適用
+        applyFoodEffects(player, foodItem)
+        
+        // フィードバック
+        player.sendActionBar(
+            Component.text("🍖 ", NamedTextColor.GOLD)
+                .append(Component.text(foodItem.type.name.lowercase().replace("_", " "), NamedTextColor.YELLOW))
+                .append(Component.text(" を自動で食べました！", NamedTextColor.GRAY))
+        )
+        
+        // パーティクルとサウンド
+        player.world.spawnParticle(
+            Particle.ITEM,
+            player.location.add(0.0, 1.5, 0.0),
+            10,
+            0.3, 0.3, 0.3,
+            0.1,
+            foodItem
+        )
+        
+        player.playSound(
+            player.location,
+            Sound.ENTITY_GENERIC_EAT,
+            1.0f,
+            1.0f
+        )
+    }
+
+    /**
+     * DataComponentTypes.CONSUMABLEを使用して効果を適用する
+     */
+    private fun applyFoodEffects(player: Player, item: ItemStack) {
+        // DataComponentが存在するかチェック
+        if (!item.hasData(DataComponentTypes.CONSUMABLE)) {
+            return
+        }
+
+        val consumable = item.getData(DataComponentTypes.CONSUMABLE) ?: return
+        
+        // consumeEffects (APIによっては effects などの可能性あり)
+        for (consumeEffect in consumable.consumeEffects()) {
+             if (consumeEffect is ConsumeEffect.ApplyStatusEffects) {
+                 if (Math.random() < consumeEffect.probability()) {
+                     for (effect in consumeEffect.effects()) {
+                         player.addPotionEffect(effect)
+                     }
+                 }
+             }
+        }
+    }
+
+    data class FoodInfo(val nutrition: Int, val saturation: Float)
+
+    private fun getFoodInfo(material: Material): FoodInfo? {
+        return when (material) {
+            Material.APPLE -> FoodInfo(4, 2.4f)
+            Material.BAKED_POTATO -> FoodInfo(5, 6.0f)
+            Material.BREAD -> FoodInfo(5, 6.0f)
+            Material.CARROT -> FoodInfo(3, 3.6f)
+            Material.COOKED_BEEF -> FoodInfo(8, 12.8f)
+            Material.COOKED_CHICKEN -> FoodInfo(6, 7.2f)
+            Material.COOKED_COD -> FoodInfo(5, 6.0f)
+            Material.COOKED_MUTTON -> FoodInfo(6, 9.6f)
+            Material.COOKED_PORKCHOP -> FoodInfo(8, 12.8f)
+            Material.COOKED_RABBIT -> FoodInfo(5, 6.0f)
+            Material.COOKED_SALMON -> FoodInfo(6, 9.6f)
+            Material.COOKIE -> FoodInfo(2, 0.4f)
+            Material.DRIED_KELP -> FoodInfo(1, 0.6f)
+            Material.ENCHANTED_GOLDEN_APPLE -> FoodInfo(4, 9.6f)
+            Material.GOLDEN_APPLE -> FoodInfo(4, 9.6f)
+            Material.GOLDEN_CARROT -> FoodInfo(6, 14.4f)
+            Material.HONEY_BOTTLE -> FoodInfo(6, 1.2f)
+            Material.MELON_SLICE -> FoodInfo(2, 1.2f)
+            Material.MUSHROOM_STEW -> FoodInfo(6, 7.2f)
+            Material.POISONOUS_POTATO -> FoodInfo(2, 1.2f)
+            Material.POTATO -> FoodInfo(1, 0.6f)
+            Material.PUFFERFISH -> FoodInfo(1, 0.2f)
+            Material.PUMPKIN_PIE -> FoodInfo(8, 4.8f)
+            Material.RABBIT_STEW -> FoodInfo(10, 12.0f)
+            Material.BEEF -> FoodInfo(3, 1.8f)
+            Material.CHICKEN -> FoodInfo(2, 1.2f)
+            Material.COD -> FoodInfo(2, 0.4f)
+            Material.MUTTON -> FoodInfo(2, 1.2f)
+            Material.PORKCHOP -> FoodInfo(3, 1.8f)
+            Material.RABBIT -> FoodInfo(3, 1.8f)
+            Material.SALMON -> FoodInfo(2, 0.4f)
+            Material.ROTTEN_FLESH -> FoodInfo(4, 0.8f)
+            Material.SPIDER_EYE -> FoodInfo(2, 3.2f)
+            Material.SUSPICIOUS_STEW -> FoodInfo(6, 7.2f)
+            Material.SWEET_BERRIES -> FoodInfo(2, 0.4f)
+            Material.GLOW_BERRIES -> FoodInfo(2, 0.4f)
+            Material.BEETROOT -> FoodInfo(1, 1.2f)
+            Material.BEETROOT_SOUP -> FoodInfo(6, 7.2f)
+            Material.CHORUS_FRUIT -> FoodInfo(4, 2.4f)
+            else -> null
+        }
+    }
+}
diff --git a/src/main/kotlin/net/hareworks/hcu/items/listeners/EventListener.kt b/src/main/kotlin/net/hareworks/hcu/items/listeners/EventListener.kt
index e77147a..bd29f51 100644
--- a/src/main/kotlin/net/hareworks/hcu/items/listeners/EventListener.kt
+++ b/src/main/kotlin/net/hareworks/hcu/items/listeners/EventListener.kt
@@ -146,6 +146,18 @@ class EventListener(private val plugin: Plugin) : Listener {
         dispatchToComponents(item) { it.onItemHeld(player, item, event) }
     }
 
+    @EventHandler
+    fun onFoodLevelChange(event: org.bukkit.event.entity.FoodLevelChangeEvent) {
+        val entity = event.entity
+        if (entity is Player) {
+            // インベントリ内の全アイテムをチェック
+            val items = entity.inventory.contents.filterNotNull()
+            for (item in items) {
+                dispatchToItem(item) { it.onFoodLevelChange(event) }
+            }
+        }
+    }
+
     private fun tickComponents() {
         for (player in plugin.server.onlinePlayers) {
             val uuid = player.uniqueId
@@ -175,17 +187,25 @@ class EventListener(private val plugin: Plugin) : Listener {
                  }
             }
             
-            // Update Cache
             // Update Cache
             lastHeldItems[uuid] = Pair(currentMainHand, currentOffHand)
 
             // --- Regular Tick Processing ---
             
-            // Armor Tick
-            val armorItems = player.inventory.armorContents.filterNotNull()
-            for (item in armorItems) {
-                if (item.type.isAir) continue
+            // 1. Dispatch onTick to ALL CustomItems in inventory
+            // inventory.contents typically covers storage, hotbar, armor, and offhand depending on implementation,
+            // but we iterate it to ensure we catch items anywhere in the inventory.
+            for (item in player.inventory.contents) {
+                if (item == null || item.type.isAir) continue
                 dispatchToItem(item) { it.onTick(player, item) }
+            }
+            
+            // 2. Dispatch to Components for specific slots (Armor, MainHand, OffHand)
+            // Note: dispatchToItem is skipped here because it was already done above for all items.
+            
+            // Armor Tick
+            for (item in player.inventory.armorContents) {
+                if (item == null || item.type.isAir) continue
                 dispatchToComponents(item) { component ->
                     if (component is EquippableComponent) {
                         component.onTick(player, item)
@@ -195,7 +215,6 @@ class EventListener(private val plugin: Plugin) : Listener {
             
             // ToolComponents in Main Hand
             if (!currentMainHand.type.isAir) {
-                dispatchToItem(currentMainHand) { it.onTick(player, currentMainHand) }
                 dispatchToComponents(currentMainHand) { component ->
                     if (component is ToolComponent) {
                         component.onHoldTick(player, currentMainHand)
@@ -208,7 +227,6 @@ class EventListener(private val plugin: Plugin) : Listener {
             
             // ToolComponents in Off Hand
             if (!currentOffHand.type.isAir) {
-                dispatchToItem(currentOffHand) { it.onTick(player, currentOffHand) }
                 dispatchToComponents(currentOffHand) { component ->
                     if (component is ToolComponent) {
                         component.onHoldTick(player, currentOffHand)
diff --git a/src/main/resources/config.yml b/src/main/resources/config.yml
index faf8146..cfdf48b 100644
--- a/src/main/resources/config.yml
+++ b/src/main/resources/config.yml
@@ -19,7 +19,7 @@ components:
       "#minecraft:gold_ores": "#FCEE4B"
       "#minecraft:copper_ores": "#966756"
       "#minecraft:coal_ores": "#363636"
-      "#minecraft:redstone_ores": "#FF0000"
+      "#minecraft:redstone_ores": "#FF0000" 
       "#minecraft:lapis_ores": "#1F61AE"
       "#minecraft:emerald_ores": "#00D93A"
       "minecraft:ancient_debr ": "#623A32"
@@ -71,3 +71,6 @@ components:
           - "minecraft:hay_block"
           - "#minecraft:wart_blocks"
 
+items:
+  auto_feeder:
+    hunger_threshold: 10 # 満腹度がこの値以下になると自動で食事