diff --git a/Assets/Scenes/SampleScene.unity b/Assets/Scenes/SampleScene.unity
index f976dc7..195c0e6 100644
--- a/Assets/Scenes/SampleScene.unity
+++ b/Assets/Scenes/SampleScene.unity
@@ -1230,7 +1230,7 @@ MonoBehaviour:
   root: {fileID: 1281046468}
   panelSettings: {fileID: 11400000, guid: 2bc58aab5867867e5b0feeae2df42fd0, type: 2}
   despawnTimeout:
-    duration: 2
+    duration: 60
     unit: 2
   prefab: {fileID: 0}
 --- !u!1 &1363717994
diff --git a/Assets/Scripts/Editor/PropertyDrawers/DurationPropertyDrawer.cs b/Assets/Scripts/Editor/PropertyDrawers/DurationPropertyDrawer.cs
index 86d10ef..094388a 100644
--- a/Assets/Scripts/Editor/PropertyDrawers/DurationPropertyDrawer.cs
+++ b/Assets/Scripts/Editor/PropertyDrawers/DurationPropertyDrawer.cs
@@ -3,7 +3,7 @@ using UnityEditor;
 using UnityEditor.UIElements;
 using UnityEngine.UIElements;
 
-[CustomPropertyDrawer(typeof(SerializableDuration))]
+[CustomPropertyDrawer(typeof(Duration))]
 public class DurationPropertyDrawer : PropertyDrawer
 {
     public override VisualElement CreatePropertyGUI(SerializedProperty property)
@@ -12,7 +12,7 @@ public class DurationPropertyDrawer : PropertyDrawer
         container.style.flexDirection = FlexDirection.Row;
 
         var duration = new PropertyField(
-            property.FindPropertyRelative("duration"),
+            property.FindPropertyRelative("displayValue"),
             ObjectNames.NicifyVariableName(property.name)
         );
 
diff --git a/Assets/Scripts/System/Duration.cs b/Assets/Scripts/System/Duration.cs
index ed13470..382d9ff 100644
--- a/Assets/Scripts/System/Duration.cs
+++ b/Assets/Scripts/System/Duration.cs
@@ -1,4 +1,6 @@
 using System;
+using NUnit.Framework.Constraints;
+using UnityEngine;
 using UnityEngine.UIElements;
 
 namespace KitsuneCafe.System
@@ -13,24 +15,34 @@ namespace KitsuneCafe.System
         Days
     }
 
-    public readonly struct Duration : IComparable, IComparable<Duration>, IComparable<TimeSpan>, IEquatable<Duration>, IEquatable<TimeSpan>
+    [Serializable]
+    public struct Duration : IComparable, IComparable<Duration>, IComparable<TimeSpan>, IEquatable<Duration>, IEquatable<TimeSpan>, ISerializationCallbackReceiver
     {
-        public readonly long Value;
-        private readonly TimeUnit unit;
+        [SerializeField]
+        private double displayValue;
+
+        [SerializeField, HideInInspector]
+        private long value;
+
+        [SerializeField]
+        private TimeUnit unit;
 
         public Duration(long ticks, TimeUnit unit)
         {
-            Value = ticks;
+            displayValue = ToDisplayValue(ticks, unit);
+            value = ticks;
             this.unit = unit;
         }
 
         public Duration(long ticks) : this(ticks, TimeUnit.Ticks) { }
 
+        public static implicit operator Duration(TimeSpan ts) => new(ts.Ticks, TimeUnit.Ticks);
         public static implicit operator TimeSpan(Duration duration) => duration.AsTimeSpan();
         public static implicit operator TimeValue(Duration duration) => duration.AsTimeValue();
+        public static Duration operator +(Duration lhs, Duration rhs) => lhs.AsTimeSpan() + rhs.AsTimeSpan();
 
-        public readonly TimeSpan AsTimeSpan() => new(Value);
-        public readonly TimeValue AsTimeValue() => new(Into(TimeUnit.Seconds));
+        public readonly TimeSpan AsTimeSpan() => new(value);
+        public readonly TimeValue AsTimeValue() => new((float)Into(TimeUnit.Seconds));
 
         public static Duration From(long value, TimeUnit unit)
         {
@@ -64,74 +76,107 @@ namespace KitsuneCafe.System
             return new Duration(Convert.ToInt64(ticks), unit);
         }
 
-        public long Into(TimeUnit unit)
+        public static double ToDisplayValue(long ticks, TimeUnit unit)
         {
             return unit switch
             {
-                TimeUnit.Ticks => Value,
-                TimeUnit.Milliseconds => Value / TimeSpan.TicksPerMillisecond,
-                TimeUnit.Seconds => Value / TimeSpan.TicksPerSecond,
-                TimeUnit.Minutes => Value / TimeSpan.TicksPerMinute,
-                TimeUnit.Hours => Value / TimeSpan.TicksPerHour,
-                TimeUnit.Days => Value / TimeSpan.TicksPerHour,
+                TimeUnit.Ticks => ticks,
+                TimeUnit.Milliseconds => ticks / TimeSpan.TicksPerMillisecond,
+                TimeUnit.Seconds => ticks / TimeSpan.TicksPerSecond,
+                TimeUnit.Minutes => ticks / TimeSpan.TicksPerMinute,
+                TimeUnit.Hours => ticks / TimeSpan.TicksPerHour,
+                TimeUnit.Days => ticks / TimeSpan.TicksPerHour,
                 var x => throw new ArgumentException($"{x} is not a valid TimeUnit.")
             };
         }
 
-        public int CompareTo(object obj)
+        public static long FromDisplayValue(double value, TimeUnit unit)
+        {
+            var ticks = unit switch
+            {
+                TimeUnit.Ticks => value,
+                TimeUnit.Milliseconds => TimeSpan.TicksPerMillisecond * value,
+                TimeUnit.Seconds => TimeSpan.TicksPerSecond * value,
+                TimeUnit.Minutes => TimeSpan.TicksPerMinute * value,
+                TimeUnit.Hours => TimeSpan.TicksPerHour * value,
+                TimeUnit.Days => TimeSpan.TicksPerHour * value,
+                var x => throw new ArgumentException($"{x} is not a valid TimeUnit.")
+            };
+
+            return Convert.ToInt64(ticks);
+        }
+
+        public readonly double Into() => Into(unit);
+        public readonly double Into(TimeUnit unit)
+        {
+            return ToDisplayValue(value, unit);
+        }
+
+        public readonly int CompareTo(object obj)
         {
             return obj switch
             {
                 Duration d => CompareTo(d),
                 TimeSpan ts => CompareTo(ts),
-                var value => throw new ArgumentException($"{value} is not a Duration or TimeSpan")
+                TimeValue tv => CompareTo(tv),
+                var value => throw new ArgumentException($"{value} is not comparable to Duration")
             };
         }
 
         public static bool Equals(Duration a, Duration b)
         {
-            return a.Value == b.Value;
+            return a.value == b.value;
         }
 
         public static int Compare(Duration a, Duration b)
         {
-            return a.Value.CompareTo(b.Value);
+            return a.value.CompareTo(b.value);
         }
 
-        public int CompareTo(Duration other)
+        public readonly int CompareTo(Duration other)
         {
             return Compare(this, other);
         }
 
-        public int CompareTo(TimeSpan other)
+        public readonly int CompareTo(TimeSpan other)
         {
             return TimeSpan.Compare(this, other);
         }
 
-        public bool Equals(Duration other)
+        public readonly bool Equals(Duration other)
         {
             return Equals(this, other);
         }
 
-        public bool Equals(TimeSpan other)
+        public readonly bool Equals(TimeSpan other)
         {
             return other.Equals(this);
         }
 
-        public override bool Equals(object obj)
+        public override readonly bool Equals(object obj)
         {
             return (obj is Duration d && Equals(this, d))
                 || (obj is TimeSpan ts && Equals(this, ts));
         }
 
-        public override int GetHashCode()
+        public override readonly int GetHashCode()
         {
-            return HashCode.Combine(Value);
+            return HashCode.Combine(value);
         }
 
-        public override string ToString()
+        public override readonly string ToString()
         {
-            return $"{Value} {nameof(unit)}";
+            return $"{value} {nameof(unit)}";
+        }
+
+        public void OnBeforeSerialize()
+        {
+            displayValue = Into();
+        }
+
+        public void OnAfterDeserialize()
+        {
+            value = FromDisplayValue(displayValue, unit);
         }
     }
 }
diff --git a/Assets/Scripts/System/SerializableDuration.cs b/Assets/Scripts/System/SerializableDuration.cs
deleted file mode 100644
index 790fc1a..0000000
--- a/Assets/Scripts/System/SerializableDuration.cs
+++ /dev/null
@@ -1,21 +0,0 @@
-using System;
-using UnityEngine;
-using UnityEngine.UIElements;
-
-namespace KitsuneCafe.System
-{
-    [Serializable]
-    public class SerializableDuration
-    {
-        [SerializeField]
-        private float duration;
-
-        [SerializeField]
-        private TimeUnit unit = TimeUnit.Seconds;
-
-
-        public static implicit operator Duration(SerializableDuration d) => Duration.From(d.duration, d.unit);
-        public static implicit operator TimeSpan(SerializableDuration d) => Duration.From(d.duration, d.unit);
-        public static implicit operator TimeValue(SerializableDuration d) => Duration.From(d.duration, d.unit);
-    }
-}
diff --git a/Assets/Scripts/System/SerializableDuration.cs.meta b/Assets/Scripts/System/SerializableDuration.cs.meta
deleted file mode 100644
index 9b319aa..0000000
--- a/Assets/Scripts/System/SerializableDuration.cs.meta
+++ /dev/null
@@ -1,2 +0,0 @@
-fileFormatVersion: 2
-guid: 490bd35fe5e91e4489990185d89762ec
\ No newline at end of file
diff --git a/Assets/Scripts/UI/Effect/FadeEffect.cs b/Assets/Scripts/UI/Effect/FadeEffect.cs
index 270e352..59b8be9 100644
--- a/Assets/Scripts/UI/Effect/FadeEffect.cs
+++ b/Assets/Scripts/UI/Effect/FadeEffect.cs
@@ -6,6 +6,7 @@ using UnityEngine;
 using UnityEngine.UIElements;
 using KitsuneCafe.Extension;
 using Unit = R3.Unit;
+using System;
 
 namespace KitsuneCafe.UI
 {
@@ -19,13 +20,13 @@ namespace KitsuneCafe.UI
         private string propertyName = "opacity";
 
         [SerializeField, ShowIf("addTransition")]
-        private SerializableDuration duration;
+        private Duration duration;
 
         [SerializeField, ShowIf("addTransition")]
         private EasingMode easing;
 
         [SerializeField, ShowIf("addTransition")]
-        private SerializableDuration delay;
+        private Duration delay;
 
         [SerializeField, Range(0f, 1f)]
         private float from;
@@ -35,7 +36,7 @@ namespace KitsuneCafe.UI
 
         public override IUiEffect Instantiate()
         {
-            var fade = new FadeEffectInstance(from, to);
+            var fade = new FadeEffectInstance(from, to, duration + delay);
 
             if (addTransition)
             {
@@ -51,10 +52,13 @@ namespace KitsuneCafe.UI
         public readonly float From;
         public readonly float To;
 
-        public FadeEffectInstance(float from, float to)
+        public readonly TimeSpan Timeout;
+
+        public FadeEffectInstance(float from, float to, TimeSpan timeout)
         {
             From = from;
             To = to;
+            Timeout = timeout;
         }
 
         private Observable<Unit> ObserveGeometryChange(VisualElement target, CancellationToken token)
@@ -74,18 +78,25 @@ namespace KitsuneCafe.UI
             .Take(1);
         }
 
+        private bool IsOpacityEvent(TransitionEndEvent evt)
+        {
+            return evt.stylePropertyNames.Contains("opacity");
+        }
+
         public Observable<Unit> Execute(VisualElement target, CancellationToken token)
         {
             target.style.opacity = From;
+
             var to = To;
             return Defer(target, token)
                 .Do(_ => target.style.opacity = to)
-                .Select(_ => target.ObserveEvent<TransitionEndEvent>())
+                .Select(_ => target.ObserveEvent<TransitionEndEvent>(token))
                 .Switch()
-                .Where(evt => evt.stylePropertyNames.Contains("opacity"))
+                .Where(IsOpacityEvent)
                 .Take(1)
                 .TakeUntil(token)
-                .AsUnitObservable();
+                .AsUnitObservable()
+                .Race(Observable.Timer(Timeout));
         }
     }
 }
diff --git a/Assets/Scripts/UI/Orchestration/UiElementInstance.cs b/Assets/Scripts/UI/Orchestration/UiElementInstance.cs
index d159821..abd8100 100644
--- a/Assets/Scripts/UI/Orchestration/UiElementInstance.cs
+++ b/Assets/Scripts/UI/Orchestration/UiElementInstance.cs
@@ -18,7 +18,6 @@ namespace KitsuneCafe.UI
         private IUiElement uiElement;
         private VisualElement visualElement;
 
-        private DisposableBag activeEffects;
         private IDisposable instance;
 
         private CancellationTokenSource cts;
@@ -41,21 +40,20 @@ namespace KitsuneCafe.UI
             Document.panelSettings = settings;
 
             instance = ConfigureWhenReady(element)
+                .TakeUntil(cts.Token)
                 .Subscribe();
         }
 
         /// <summary>
         /// Internal configuration of the VisualElement. Called when rootVisualElement is ready.
         /// </summary>
-        private void Configure(IUiElement uiElement, VisualElement visualElement)
+        private Observable<Unit> Configure(IUiElement uiElement, VisualElement visualElement)
         {
             this.visualElement = visualElement;
 
             uiElement.Configure(visualElement);
 
-            Raise(UiEvent.OnCreate, cts.Token)
-                .Subscribe()
-                .AddTo(ref activeEffects);
+            return Raise(UiEvent.OnCreate, cts.Token);
         }
 
         /// <summary>
@@ -66,9 +64,7 @@ namespace KitsuneCafe.UI
             return Observable.EveryValueChanged(Document, d => d.rootVisualElement)
                 .WhereNotNull()
                 .Take(1)
-                .TakeUntil(cts.Token)
-                .Do(root => Configure(element, root))
-                .AsUnitObservable();
+                .SelectMany(root => Configure(element, root));
         }
 
         /// <summary>
@@ -102,9 +98,6 @@ namespace KitsuneCafe.UI
             cts?.Dispose();
             cts = null;
 
-            // activeEffects.Dispose();
-            activeEffects.Clear();
-
             instance?.Dispose();
 
             uiElement = default;
@@ -115,18 +108,13 @@ namespace KitsuneCafe.UI
         /// Initiates the despawn process: runs OnDestroy effects, waits for them to finish,
         /// then disposes everything and releases the object back to the pool.
         /// </summary>
-        public Observable<Unit> Despawn(CancellationTokenSource cts = default)
+        public Observable<Unit> Despawn(CancellationToken token = default)
         {
-            cts ??= new CancellationTokenSource();
-
-            return Raise(UiEvent.OnDestroy, cts.Token)
-                .Do(onCompleted: _ =>
-                {
-                    Dispose();
-                    PooledObject.Release();
-                },
-                onErrorResume: _ => cts.Cancel())
-                .TakeUntil(cts.Token)
+            cts.Cancel();
+            return Raise(UiEvent.OnDestroy, token)
+                .Do(onDispose: () => Debug.Log("Disposing OnDestroy"))
+                .Do(onCompleted: _ => DespawnNow(),
+                onErrorResume: _ => DespawnNow())
                 .AsUnitObservable();
         }
 
diff --git a/Assets/Scripts/UI/Orchestration/UiSceneManager.cs b/Assets/Scripts/UI/Orchestration/UiSceneManager.cs
index 1c02bc9..374185e 100644
--- a/Assets/Scripts/UI/Orchestration/UiSceneManager.cs
+++ b/Assets/Scripts/UI/Orchestration/UiSceneManager.cs
@@ -14,7 +14,7 @@ namespace KitsuneCafe.UI
 
         [SerializeField] private Transform root;
         [SerializeField] private PanelSettings panelSettings;
-        [SerializeField] private SerializableDuration despawnTimeout;
+        [SerializeField] private Duration globalTimeout;
         [SerializeField] private GameObject prefab;
 
         private readonly Dictionary<ElementId, GameObject> activeElements = new();
@@ -141,7 +141,7 @@ namespace KitsuneCafe.UI
                 if (obj.TryGetComponent<UiElementInstance>(out var instance))
                 {
                     instance.Despawn()
-                        .Race(Observable.Timer(despawnTimeout).Do(_ => instance.DespawnNow()))
+                        .Race(Observable.Timer(globalTimeout).Do(_ => instance.DespawnNow()))
                         .Do(onCompleted: _ => activeElements.Remove(id))
                         .Subscribe()
                         .AddTo(obj);