diff --git a/Assets/Config.unity b/Assets/Config.unity
index 6a8e2dd..46ab3bc 100644
Binary files a/Assets/Config.unity and b/Assets/Config.unity differ
diff --git a/Assets/Cryville/Crtr/Config.meta b/Assets/Cryville/Crtr/Config.meta
new file mode 100644
index 0000000..28bbb17
--- /dev/null
+++ b/Assets/Cryville/Crtr/Config.meta
@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: 2e030b9eb9f613844a4a302812e517ad
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Assets/Cryville/Crtr/Config/InputConfig.cs b/Assets/Cryville/Crtr/Config/InputConfig.cs
new file mode 100644
index 0000000..ed9d02d
--- /dev/null
+++ b/Assets/Cryville/Crtr/Config/InputConfig.cs
@@ -0,0 +1,105 @@
+using Cryville.Common.Unity;
+using Cryville.Common.Unity.Input;
+using Newtonsoft.Json;
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Text;
+using UnityEngine;
+using UnityEngine.UI;
+
+namespace Cryville.Crtr.Config {
+	public class InputConfig : MonoBehaviour {
+		[SerializeField]
+		GameObject m_inputDialog;
+
+		[SerializeField]
+		Transform m_deviceList;
+
+		[SerializeField]
+		GameObject m_prefabListItem;
+
+		[SerializeField]
+		Transform m_entryList;
+
+		[SerializeField]
+		GameObject m_prefabInputConfigEntry;
+
+		InputProxy _proxy;
+		Dictionary<string, InputConfigEntry> _entries = new Dictionary<string, InputConfigEntry>();
+
+		string _sel;
+		public void OpenDialog(string entry) {
+			_sel = entry;
+			m_inputDialog.SetActive(true);
+			Game.InputManager.Activate();
+			CallHelper.Purge(m_deviceList);
+			_recvsrcs.Clear();
+			AddSourceItem(null);
+		}
+
+		public void CloseDialog() {
+			m_inputDialog.SetActive(false);
+			Game.InputManager.Deactivate();
+		}
+
+		public void CloseDialog(InputSource? src) {
+			_proxy.Set(new InputProxyEntry {
+				Target = _sel,
+				Source = src,
+			});
+			m_inputDialog.SetActive(false);
+			Game.InputManager.Deactivate();
+		}
+
+		void Start() {
+			ChartPlayer.etor = new PdtEvaluator();
+			FileInfo file = new FileInfo(
+				Game.GameDataPath + "/rulesets/" + Settings.Default.LoadRuleset
+			);
+			DirectoryInfo dir = file.Directory;
+			using (StreamReader reader = new StreamReader(file.FullName, Encoding.UTF8)) {
+				var ruleset = JsonConvert.DeserializeObject<Ruleset>(reader.ReadToEnd(), new JsonSerializerSettings() {
+					MissingMemberHandling = MissingMemberHandling.Error
+				});
+				if (ruleset.format != 1) throw new FormatException("Invalid ruleset file version");
+				ruleset.LoadPdt(dir);
+				_proxy = new InputProxy(ruleset.Root);
+				foreach (var i in ruleset.Root.inputs) {
+					var e = GameObject.Instantiate(m_prefabInputConfigEntry).GetComponent<InputConfigEntry>();
+					e.transform.SetParent(m_entryList.transform);
+					_entries.Add(i.Key, e);
+					e.SetKey(this, i.Key);
+				}
+				_proxy.ProxyChanged += OnProxyChanged;
+			}
+		}
+
+		void OnProxyChanged(object sender, ProxyChangedEventArgs e) {
+			_entries[e.Name].SetEnabled(!e.Used);
+			_entries[e.Name].SetValue(e.Proxy == null ? "None" : e.Proxy.Value.Handler.GetTypeName(e.Proxy.Value.Type));
+		}
+
+		readonly List<InputSource?> _recvsrcs = new List<InputSource?>();
+		void Update() {
+			if (m_inputDialog.activeSelf) {
+				Game.InputManager.EnumerateEvents(ev => {
+					AddSourceItem(ev.Id.Source);
+				});
+			}
+		}
+
+		void AddSourceItem(InputSource? src) {
+			if (_recvsrcs.Contains(src)) return;
+			_recvsrcs.Add(src);
+			var obj = Instantiate(m_prefabListItem);
+			obj.transform.SetParent(m_deviceList);
+			obj.transform.Find("Text").GetComponent<Text>().text = src == null ? "None" : src.Value.Handler.GetTypeName(src.Value.Type);
+			var btn = obj.GetComponent<Button>();
+			if (src != null) btn.interactable = !_proxy.IsUsed(src.Value);
+			btn.onClick.AddListener(() => {
+				CloseDialog(src);
+			});
+		}
+	}
+}
diff --git a/Assets/Cryville/Crtr/InputConfig.cs.meta b/Assets/Cryville/Crtr/Config/InputConfig.cs.meta
similarity index 100%
rename from Assets/Cryville/Crtr/InputConfig.cs.meta
rename to Assets/Cryville/Crtr/Config/InputConfig.cs.meta
diff --git a/Assets/Cryville/Crtr/Config/InputConfigEntry.cs b/Assets/Cryville/Crtr/Config/InputConfigEntry.cs
new file mode 100644
index 0000000..c88737d
--- /dev/null
+++ b/Assets/Cryville/Crtr/Config/InputConfigEntry.cs
@@ -0,0 +1,31 @@
+using UnityEngine;
+using UnityEngine.UI;
+
+namespace Cryville.Crtr.Config {
+	public class InputConfigEntry : MonoBehaviour {
+		[SerializeField]
+		Text m_key;
+
+		[SerializeField]
+		Text m_value;
+
+		[SerializeField]
+		Button m_button;
+
+		public void SetKey(InputConfig master, string name) {
+			m_key.text = name + " ";
+			m_value.text = "None";
+			m_button.onClick.AddListener(() => {
+				master.OpenDialog(name);
+			});
+		}
+
+		public void SetValue(string name) {
+			m_value.text = name;
+		}
+
+		public void SetEnabled(bool flag) {
+			m_button.interactable = flag;
+		}
+	}
+}
diff --git a/Assets/Cryville/Crtr/Config/InputConfigEntry.cs.meta b/Assets/Cryville/Crtr/Config/InputConfigEntry.cs.meta
new file mode 100644
index 0000000..7546d8f
--- /dev/null
+++ b/Assets/Cryville/Crtr/Config/InputConfigEntry.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 8661f4d4934e11040a0c65729d4ba47a
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Assets/Cryville/Crtr/InputConfig.cs b/Assets/Cryville/Crtr/InputConfig.cs
deleted file mode 100644
index 5684b7c..0000000
--- a/Assets/Cryville/Crtr/InputConfig.cs
+++ /dev/null
@@ -1,49 +0,0 @@
-using Cryville.Common.Unity;
-using Cryville.Common.Unity.Input;
-using System.Collections.Generic;
-using UnityEngine;
-using UnityEngine.UI;
-
-namespace Cryville.Crtr {
-	public class InputConfig : MonoBehaviour {
-		[SerializeField]
-		GameObject m_inputDialog;
-
-		[SerializeField]
-		Transform m_deviceList;
-
-		[SerializeField]
-		GameObject m_prefabListItem;
-
-		public void OpenDialog() {
-			m_inputDialog.SetActive(true);
-			Game.InputManager.Activate();
-			CallHelper.Purge(m_deviceList);
-			_recvsrcs.Clear();
-		}
-
-		public void CloseDialog() {
-			CloseDialog(null);
-		}
-
-		public void CloseDialog(InputSource? src) {
-			m_inputDialog.SetActive(false);
-			Game.InputManager.Deactivate();
-		}
-
-		List<InputSource> _recvsrcs = new List<InputSource>();
-		void Update() {
-			if (m_inputDialog.activeSelf) {
-				Game.InputManager.EnumerateEvents(ev => {
-					var src = ev.Id.Source;
-					if (!_recvsrcs.Contains(src)) {
-						_recvsrcs.Add(src);
-						var obj = Instantiate(m_prefabListItem);
-						obj.transform.SetParent(m_deviceList);
-						obj.transform.Find("Text").GetComponent<Text>().text = src.Handler.GetTypeName(src.Type);
-					}
-				});
-			}
-		}
-	}
-}
diff --git a/Assets/Cryville/Crtr/InputProxy.cs b/Assets/Cryville/Crtr/InputProxy.cs
index cb88a91..7334562 100644
--- a/Assets/Cryville/Crtr/InputProxy.cs
+++ b/Assets/Cryville/Crtr/InputProxy.cs
@@ -1,6 +1,7 @@
 using Cryville.Common.Unity.Input;
 using System;
 using System.Collections.Generic;
+using System.Xml.Linq;
 
 namespace Cryville.Crtr {
 	public class InputProxy {
@@ -25,61 +26,70 @@ namespace Cryville.Crtr {
 		}
 		public void Set(InputProxyEntry proxy) {
 			var name = proxy.Target;
-			if (_use[name] > 0)
+			if (_hash1.ContainsKey(name)) Remove(proxy);
+			if (_use[proxy.Target] > 0)
 				throw new InvalidOperationException("Input already assigned");
-			_hash1.Add(proxy.Target, proxy);
-			_hash2.Add(proxy.Source, proxy);
-			if (proxy != null) {
+			if (proxy.Source != null) {
+				_hash1.Add(proxy.Target, proxy);
+				_hash2.Add(proxy.Source.Value, proxy);
 				IncrementUseRecursive(name);
 				IncrementReversedUseRecursive(name);
 			}
-			else {
-				DecrementUseRecursive(name);
-				DecrementReversedUseRecursive(name);
-			}
+		}
+		void Remove(InputProxyEntry proxy) {
+			var name = proxy.Target;
+			_hash2.Remove(_hash1[name].Source.Value);
+			_hash1.Remove(name);
+			DecrementUseRecursive(name);
+			DecrementReversedUseRecursive(name);
+		}
+		public bool IsUsed(InputSource src) {
+			return _hash2.ContainsKey(src);
 		}
 		void IncrementUseRecursive(string name) {
-			_use[name]++;
 			BroadcastProxyChanged(name);
 			var passes = _ruleset.inputs[name].pass;
 			if (passes != null) {
-				foreach (var p in _ruleset.inputs[name].pass)
+				foreach (var p in _ruleset.inputs[name].pass) {
+					_use[p.Key]++;
 					IncrementUseRecursive(p.Key);
+				}
 			}
 		}
 		void IncrementReversedUseRecursive(string name) {
 			foreach (var p in _rev[name]) {
-				_use[name]++;
-				BroadcastProxyChanged(name);
+				_use[p]++;
+				BroadcastProxyChanged(p);
 				IncrementReversedUseRecursive(p);
 			}
 		}
 		void DecrementUseRecursive(string name) {
-			_use[name]--;
 			BroadcastProxyChanged(name);
 			var passes = _ruleset.inputs[name].pass;
 			if (passes != null) {
-				foreach (var p in _ruleset.inputs[name].pass)
+				foreach (var p in _ruleset.inputs[name].pass) {
+					_use[p.Key]--;
 					DecrementUseRecursive(p.Key);
+				}
 			}
 		}
 		void DecrementReversedUseRecursive(string name) {
 			foreach (var p in _rev[name]) {
-				_use[name]--;
-				BroadcastProxyChanged(name);
+				_use[p]--;
+				BroadcastProxyChanged(p);
 				DecrementReversedUseRecursive(p);
 			}
 		}
 		void BroadcastProxyChanged(string name) {
-			ProxyChanged(this, new ProxyChangedEventArgs(name, _hash1[name].Source, _use[name] > 0));
+			ProxyChanged(this, new ProxyChangedEventArgs(name, _hash1.ContainsKey(name) ? _hash1[name].Source : null, _use[name] > 0));
 		}
 	}
 
 	public class ProxyChangedEventArgs : EventArgs {
 		public string Name { get; private set; }
-		public InputSource Proxy { get; private set; }
+		public InputSource? Proxy { get; private set; }
 		public bool Used { get; private set; }
-		public ProxyChangedEventArgs(string name, InputSource src, bool used) {
+		public ProxyChangedEventArgs(string name, InputSource? src, bool used) {
 			Name = name;
 			Proxy = src;
 			Used = used;
@@ -87,7 +97,7 @@ namespace Cryville.Crtr {
 	}
 
 	public class InputProxyEntry {
-		public InputSource Source { get; set; }
+		public InputSource? Source { get; set; }
 		public string Target { get; set; }
 		public byte[] Mapping { get; private set; }
 	}
diff --git a/Assets/Prefabs/InputConfigEntry.prefab b/Assets/Prefabs/InputConfigEntry.prefab
new file mode 100644
index 0000000..19f5a6c
Binary files /dev/null and b/Assets/Prefabs/InputConfigEntry.prefab differ
diff --git a/Assets/Prefabs/InputConfigEntry.prefab.meta b/Assets/Prefabs/InputConfigEntry.prefab.meta
new file mode 100644
index 0000000..fc263ee
--- /dev/null
+++ b/Assets/Prefabs/InputConfigEntry.prefab.meta
@@ -0,0 +1,7 @@
+fileFormatVersion: 2
+guid: 32bb0aaf176ad504696289cdd6d5308c
+PrefabImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: