diff --git a/bukkit/bukkit-key/pom.xml b/bukkit/bukkit-key/pom.xml
deleted file mode 100644
index 70c1abddfc..0000000000
--- a/bukkit/bukkit-key/pom.xml
+++ /dev/null
@@ -1,17 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xmlns="http://maven.apache.org/POM/4.0.0"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-  <parent>
-    <artifactId>hscore-bukkit</artifactId>
-    <groupId>me.hsgamer</groupId>
-    <version>4.4.0-SNAPSHOT</version>
-  </parent>
-  <modelVersion>4.0.0</modelVersion>
-
-  <artifactId>hscore-bukkit-key</artifactId>
-
-  <properties>
-    <spigot.version>1.14.4-R0.1-SNAPSHOT</spigot.version>
-  </properties>
-</project>
\ No newline at end of file
diff --git a/bukkit/bukkit-key/src/main/java/me/hsgamer/hscore/bukkit/key/AbstractKeyManager.java b/bukkit/bukkit-key/src/main/java/me/hsgamer/hscore/bukkit/key/AbstractKeyManager.java
deleted file mode 100644
index 7d836ac08c..0000000000
--- a/bukkit/bukkit-key/src/main/java/me/hsgamer/hscore/bukkit/key/AbstractKeyManager.java
+++ /dev/null
@@ -1,27 +0,0 @@
-package me.hsgamer.hscore.bukkit.key;
-
-import org.bukkit.NamespacedKey;
-
-import java.util.HashMap;
-import java.util.Map;
-
-/**
- * The abstract key manager
- */
-public abstract class AbstractKeyManager implements KeyManager {
-  private final Map<String, NamespacedKey> namespacedKeyMap = new HashMap<>();
-
-  @Override
-  public NamespacedKey createKey(String key) {
-    return namespacedKeyMap.computeIfAbsent(key, this::newKey);
-  }
-
-  /**
-   * Create a new key
-   *
-   * @param key the key
-   *
-   * @return the new key
-   */
-  public abstract NamespacedKey newKey(String key);
-}
diff --git a/bukkit/bukkit-key/src/main/java/me/hsgamer/hscore/bukkit/key/KeyManager.java b/bukkit/bukkit-key/src/main/java/me/hsgamer/hscore/bukkit/key/KeyManager.java
deleted file mode 100644
index 25ba9c10dc..0000000000
--- a/bukkit/bukkit-key/src/main/java/me/hsgamer/hscore/bukkit/key/KeyManager.java
+++ /dev/null
@@ -1,46 +0,0 @@
-package me.hsgamer.hscore.bukkit.key;
-
-import org.bukkit.NamespacedKey;
-import org.bukkit.persistence.PersistentDataType;
-
-/**
- * An interface for all {@link NamespacedKey} manager
- */
-public interface KeyManager {
-  /**
-   * Create a new {@link NamespacedKey}.
-   * This should have a function to store the created {@link NamespacedKey} for later uses.
-   *
-   * @param key the key
-   *
-   * @return the {@link NamespacedKey}
-   */
-  NamespacedKey createKey(String key);
-
-  /**
-   * Create a new key pair
-   *
-   * @param key          the key
-   * @param dataType     the data type for the value
-   * @param defaultValue the default value if not found
-   * @param <Z>          the retrieved object type when applying this data type
-   *
-   * @return the new key pair
-   */
-  default <Z> PluginKeyPair<Z> createKeyPair(String key, PersistentDataType<?, Z> dataType, Z defaultValue) {
-    return new PluginKeyPair<>(createKey(key), dataType, defaultValue);
-  }
-
-  /**
-   * Create a new key pair with null default value
-   *
-   * @param key      the key
-   * @param dataType the data type for the value
-   * @param <Z>      the retrieved object type when applying this data type
-   *
-   * @return the new key pair
-   */
-  default <Z> PluginKeyPair<Z> createKeyPair(String key, PersistentDataType<?, Z> dataType) {
-    return createKeyPair(key, dataType, null);
-  }
-}
diff --git a/bukkit/bukkit-key/src/main/java/me/hsgamer/hscore/bukkit/key/MinecraftKeyManager.java b/bukkit/bukkit-key/src/main/java/me/hsgamer/hscore/bukkit/key/MinecraftKeyManager.java
deleted file mode 100644
index 3cedb3d0c5..0000000000
--- a/bukkit/bukkit-key/src/main/java/me/hsgamer/hscore/bukkit/key/MinecraftKeyManager.java
+++ /dev/null
@@ -1,13 +0,0 @@
-package me.hsgamer.hscore.bukkit.key;
-
-import org.bukkit.NamespacedKey;
-
-/**
- * the {@link KeyManager} for default Minecraft
- */
-public class MinecraftKeyManager extends AbstractKeyManager {
-  @Override
-  public NamespacedKey newKey(String key) {
-    return NamespacedKey.minecraft(key);
-  }
-}
diff --git a/bukkit/bukkit-key/src/main/java/me/hsgamer/hscore/bukkit/key/PluginKeyManager.java b/bukkit/bukkit-key/src/main/java/me/hsgamer/hscore/bukkit/key/PluginKeyManager.java
deleted file mode 100644
index 77f201845b..0000000000
--- a/bukkit/bukkit-key/src/main/java/me/hsgamer/hscore/bukkit/key/PluginKeyManager.java
+++ /dev/null
@@ -1,25 +0,0 @@
-package me.hsgamer.hscore.bukkit.key;
-
-import org.bukkit.NamespacedKey;
-import org.bukkit.plugin.Plugin;
-
-/**
- * A {@link KeyManager} for the {@link Plugin}
- */
-public class PluginKeyManager extends AbstractKeyManager {
-  private final Plugin plugin;
-
-  /**
-   * Create a new {@link NamespacedKey} manager
-   *
-   * @param plugin the holder plugin
-   */
-  public PluginKeyManager(Plugin plugin) {
-    this.plugin = plugin;
-  }
-
-  @Override
-  public NamespacedKey newKey(String key) {
-    return new NamespacedKey(plugin, key);
-  }
-}
diff --git a/bukkit/bukkit-key/src/main/java/me/hsgamer/hscore/bukkit/key/PluginKeyPair.java b/bukkit/bukkit-key/src/main/java/me/hsgamer/hscore/bukkit/key/PluginKeyPair.java
deleted file mode 100644
index 8c6d21cfd3..0000000000
--- a/bukkit/bukkit-key/src/main/java/me/hsgamer/hscore/bukkit/key/PluginKeyPair.java
+++ /dev/null
@@ -1,160 +0,0 @@
-package me.hsgamer.hscore.bukkit.key;
-
-import org.bukkit.NamespacedKey;
-import org.bukkit.persistence.PersistentDataContainer;
-import org.bukkit.persistence.PersistentDataHolder;
-import org.bukkit.persistence.PersistentDataType;
-
-/**
- * A pair of {@link NamespacedKey} and {@link PersistentDataType}
- *
- * @param <Z> the retrieved object type when applying this data type
- */
-public class PluginKeyPair<Z> {
-  private final NamespacedKey key;
-  private final PersistentDataType<?, Z> dataType;
-  private final Z defaultValue;
-
-  /**
-   * Create a new instance of {@link PluginKeyPair}
-   *
-   * @param key          the key
-   * @param dataType     the data type
-   * @param defaultValue the default value
-   */
-  public PluginKeyPair(NamespacedKey key, PersistentDataType<?, Z> dataType, Z defaultValue) {
-    this.key = key;
-    this.dataType = dataType;
-    this.defaultValue = defaultValue;
-  }
-
-  /**
-   * Get the key
-   *
-   * @return the key
-   */
-  public NamespacedKey getKey() {
-    return key;
-  }
-
-  /**
-   * Get the data type
-   *
-   * @return the data type
-   */
-  public PersistentDataType<?, Z> getDataType() {
-    return dataType;
-  }
-
-  /**
-   * Get the default value
-   *
-   * @return the default value
-   */
-  public Z getDefaultValue() {
-    return defaultValue;
-  }
-
-  /**
-   * Get the value from the container
-   *
-   * @param container the container
-   *
-   * @return the value
-   */
-  public Z get(PersistentDataContainer container) {
-    return container.getOrDefault(key, dataType, defaultValue);
-  }
-
-  /**
-   * Set the value to the container
-   *
-   * @param container the container
-   * @param value     the value
-   */
-  public void set(PersistentDataContainer container, Z value) {
-    if (value == null) {
-      remove(container);
-    } else {
-      container.set(key, dataType, value);
-    }
-  }
-
-  /**
-   * Get the value from the holder
-   *
-   * @param holder the holder
-   *
-   * @return the value
-   */
-  public Z get(PersistentDataHolder holder) {
-    return get(holder.getPersistentDataContainer());
-  }
-
-  /**
-   * Set the value to the holder
-   *
-   * @param holder the holder
-   * @param value  the value
-   */
-  public void set(PersistentDataHolder holder, Z value) {
-    set(holder.getPersistentDataContainer(), value);
-  }
-
-  /**
-   * Check if the container contains the key
-   *
-   * @param container the container
-   */
-  public boolean contains(PersistentDataContainer container) {
-    return container.has(key, dataType);
-  }
-
-  /**
-   * Check if the holder contains the key
-   *
-   * @param holder the holder
-   */
-  public boolean contains(PersistentDataHolder holder) {
-    return contains(holder.getPersistentDataContainer());
-  }
-
-  /**
-   * Copy the value from the source container to the target container
-   *
-   * @param fromContainer the source container
-   * @param toContainer   the target container
-   */
-  public void copy(PersistentDataContainer fromContainer, PersistentDataContainer toContainer) {
-    Z value = get(fromContainer);
-    set(toContainer, value);
-  }
-
-  /**
-   * Copy the value from the source holder to the target holder
-   *
-   * @param fromHolder the source holder
-   * @param toHolder   the target holder
-   */
-  public void copy(PersistentDataHolder fromHolder, PersistentDataHolder toHolder) {
-    copy(fromHolder.getPersistentDataContainer(), toHolder.getPersistentDataContainer());
-  }
-
-  /**
-   * Remove the value from the container
-   *
-   * @param container the container
-   */
-  public void remove(PersistentDataContainer container) {
-    container.remove(key);
-  }
-
-  /**
-   * Remove the value from the holder
-   *
-   * @param holder the holder
-   */
-  public void remove(PersistentDataHolder holder) {
-    remove(holder.getPersistentDataContainer());
-  }
-}
diff --git a/bukkit/bukkit-key/src/main/java/me/hsgamer/hscore/bukkit/key/PluginKeyUtils.java b/bukkit/bukkit-key/src/main/java/me/hsgamer/hscore/bukkit/key/PluginKeyUtils.java
deleted file mode 100644
index a2f24e895e..0000000000
--- a/bukkit/bukkit-key/src/main/java/me/hsgamer/hscore/bukkit/key/PluginKeyUtils.java
+++ /dev/null
@@ -1,59 +0,0 @@
-package me.hsgamer.hscore.bukkit.key;
-
-import org.bukkit.persistence.PersistentDataContainer;
-import org.bukkit.persistence.PersistentDataHolder;
-
-/**
- * Methods to work with {@link PluginKeyPair} conveniently
- */
-public final class PluginKeyUtils {
-  private PluginKeyUtils() {
-    // EMPTY
-  }
-
-  /**
-   * Copy the {@link PluginKeyPair} from the source container to the target container
-   *
-   * @param fromContainer the source container
-   * @param toContainer   the target container
-   * @param keyPairs      the key pairs
-   */
-  public static void copy(PersistentDataContainer fromContainer, PersistentDataContainer toContainer, PluginKeyPair<?>... keyPairs) {
-    for (PluginKeyPair<?> keyPair : keyPairs) {
-      keyPair.copy(fromContainer, toContainer);
-    }
-  }
-
-  /**
-   * Copy the {@link PluginKeyPair} from the source holder to the target holder
-   *
-   * @param fromHolder the source holder
-   * @param toHolder   the target holder
-   * @param keyPairs   the key pairs
-   */
-  public static void copy(PersistentDataHolder fromHolder, PersistentDataHolder toHolder, PluginKeyPair<?>... keyPairs) {
-    copy(fromHolder.getPersistentDataContainer(), toHolder.getPersistentDataContainer(), keyPairs);
-  }
-
-  /**
-   * Remove the {@link PluginKeyPair} from the container
-   *
-   * @param container the container
-   * @param keyPairs  the key pairs
-   */
-  public static void remove(PersistentDataContainer container, PluginKeyPair<?>... keyPairs) {
-    for (PluginKeyPair<?> keyPair : keyPairs) {
-      keyPair.remove(container);
-    }
-  }
-
-  /**
-   * Remove the {@link PluginKeyPair} from the holder
-   *
-   * @param holder   the holder
-   * @param keyPairs the key pairs
-   */
-  public static void remove(PersistentDataHolder holder, PluginKeyPair<?>... keyPairs) {
-    remove(holder.getPersistentDataContainer(), keyPairs);
-  }
-}
diff --git a/bukkit/bukkit-key/src/main/java/me/hsgamer/hscore/bukkit/key/package-info.java b/bukkit/bukkit-key/src/main/java/me/hsgamer/hscore/bukkit/key/package-info.java
deleted file mode 100644
index 2f234729b5..0000000000
--- a/bukkit/bukkit-key/src/main/java/me/hsgamer/hscore/bukkit/key/package-info.java
+++ /dev/null
@@ -1,4 +0,0 @@
-/**
- * Contains extended classes for {@link org.bukkit.NamespacedKey}
- */
-package me.hsgamer.hscore.bukkit.key;
\ No newline at end of file
diff --git a/bukkit/pom.xml b/bukkit/pom.xml
index de182674a8..357c412755 100644
--- a/bukkit/pom.xml
+++ b/bukkit/pom.xml
@@ -26,7 +26,6 @@
     <module>bukkit-gui</module>
     <module>bukkit-gui-button</module>
     <module>bukkit-channel</module>
-    <module>bukkit-key</module>
     <module>bukkit-block</module>
     <module>bukkit-variable</module>
     <module>bukkit-action</module>