diff --git a/KoeBook.Common/Characters.cs b/KoeBook.Common/Characters.cs
deleted file mode 100644
index b302d46..0000000
--- a/KoeBook.Common/Characters.cs
+++ /dev/null
@@ -1,5 +0,0 @@
-namespace KoeBook.Common;
-internal class Characters
-{
-    public static Dictionary<string, string> Mapping { get; set; } = new();
-}
diff --git a/KoeBook.Common/ScriptLine.cs b/KoeBook.Common/ScriptLine.cs
deleted file mode 100644
index f918d9d..0000000
--- a/KoeBook.Common/ScriptLine.cs
+++ /dev/null
@@ -1,11 +0,0 @@
-using CommunityToolkit.Mvvm.ComponentModel;
-
-namespace KoeBook.Common;
-internal partial class ScriptLine : ObservableObject
-{
-    [ObservableProperty] private string _text = string.Empty;
-    [ObservableProperty] private string _character = string.Empty;
-    [ObservableProperty] private string _style = string.Empty;
-
-    public string SpeakingModel => Characters.Mapping[Character];
-}
diff --git a/KoeBook.Common/ScriptTextEntity.cs b/KoeBook.Common/ScriptTextEntity.cs
deleted file mode 100644
index 26e4db5..0000000
--- a/KoeBook.Common/ScriptTextEntity.cs
+++ /dev/null
@@ -1,5 +0,0 @@
-namespace KoeBook.Common;
-internal class ScriptTextEntity
-{
-    public required ScriptLine[] ScriptLines { get; set; }
-}
diff --git a/KoeBook.Core/Contracts/Services/IAnalyzerService.cs b/KoeBook.Core/Contracts/Services/IAnalyzerService.cs
new file mode 100644
index 0000000..4cd1e2c
--- /dev/null
+++ b/KoeBook.Core/Contracts/Services/IAnalyzerService.cs
@@ -0,0 +1,12 @@
+using KoeBook.Core.Models;
+
+namespace KoeBook.Core.Contracts.Services;
+
+public interface IAnalyzerService
+{
+    /// <summary>
+    /// 本の情報の取得・解析を行います
+    /// </summary>
+    /// <returns>編集前の読み上げテキスト</returns>
+    ValueTask<BookScripts> AnalyzeAsync(BookProperties bookProperties, CancellationToken cancellationToken);
+}
diff --git a/KoeBook.Core/Contracts/Services/IDisplayStateChangeService.cs b/KoeBook.Core/Contracts/Services/IDisplayStateChangeService.cs
new file mode 100644
index 0000000..0896753
--- /dev/null
+++ b/KoeBook.Core/Contracts/Services/IDisplayStateChangeService.cs
@@ -0,0 +1,16 @@
+using KoeBook.Core.Models;
+
+namespace KoeBook.Core.Contracts.Services;
+
+public interface IDisplayStateChangeService
+{
+    /// <summary>
+    /// 状態を更新します
+    /// </summary>
+    void UpdateState(BookProperties bookProperties, GenerationState state);
+
+    /// <summary>
+    /// プログレスバーを更新します
+    /// </summary>
+    void UpdateProgress(BookProperties bookProperties, int progress, int maximum);
+}
diff --git a/KoeBook.Core/Contracts/Services/IEpubGenerateService.cs b/KoeBook.Core/Contracts/Services/IEpubGenerateService.cs
new file mode 100644
index 0000000..5ea8556
--- /dev/null
+++ b/KoeBook.Core/Contracts/Services/IEpubGenerateService.cs
@@ -0,0 +1,12 @@
+using KoeBook.Core.Models;
+
+namespace KoeBook.Core.Contracts.Services;
+
+public interface IEpubGenerateService
+{
+    /// <summary>
+    /// 読み上げ音声を生成し、Epubを作成します。
+    /// </summary>
+    /// <returns>生成したEpubのパス</returns>
+    ValueTask<string> GenerateEpubAsync(BookScripts bookScripts, string tempDirectory, CancellationToken cancellationToken);
+}
diff --git a/KoeBook.Core/KoeBook.Core.csproj b/KoeBook.Core/KoeBook.Core.csproj
index 6ead6af..79db428 100644
--- a/KoeBook.Core/KoeBook.Core.csproj
+++ b/KoeBook.Core/KoeBook.Core.csproj
@@ -8,10 +8,6 @@
     <Nullable>enable</Nullable>
   </PropertyGroup>
 
-  <ItemGroup>
-    <Folder Include="Models\" />
-  </ItemGroup>
-
   <ItemGroup>
     <PackageReference Include="FastEnum" Version="1.8.0" />
   </ItemGroup>
diff --git a/KoeBook.Core/Models/BookOptions.cs b/KoeBook.Core/Models/BookOptions.cs
new file mode 100644
index 0000000..7dbfc66
--- /dev/null
+++ b/KoeBook.Core/Models/BookOptions.cs
@@ -0,0 +1,15 @@
+namespace KoeBook.Core.Models;
+
+/// <summary>
+/// 本ごとの設定
+/// </summary>
+/// <param name="characterMapping">キャラクターとモデルの紐づけ</param>
+public class BookOptions(Dictionary<string, string> characterMapping)
+{
+    public BookOptions() : this([]) { }
+
+    /// <summary>
+    /// キャラクターとモデルの紐づけ。Key: キャラクター, Value: モデル
+    /// </summary>
+    public Dictionary<string, string> CharacterMapping { get; } = characterMapping;
+}
diff --git a/KoeBook.Core/Models/BookProperties.cs b/KoeBook.Core/Models/BookProperties.cs
new file mode 100644
index 0000000..ebe3618
--- /dev/null
+++ b/KoeBook.Core/Models/BookProperties.cs
@@ -0,0 +1,13 @@
+namespace KoeBook.Core.Models;
+
+/// <summary>
+/// 読み上げる本の情報
+/// </summary>
+public class BookProperties(Guid id, string source, SourceType sourceType)
+{
+    public Guid Id { get; } = id;
+
+    public string Source { get; } = source;
+
+    public SourceType SourceType { get; } = sourceType;
+}
diff --git a/KoeBook.Core/Models/BookScripts.cs b/KoeBook.Core/Models/BookScripts.cs
new file mode 100644
index 0000000..0f4dc82
--- /dev/null
+++ b/KoeBook.Core/Models/BookScripts.cs
@@ -0,0 +1,19 @@
+namespace KoeBook.Core.Models;
+
+/// <summary>
+/// 本の読み上げ情報
+/// </summary>
+public class BookScripts(BookProperties bookProperties, BookOptions options)
+{
+    public BookProperties BookProperties { get; } = bookProperties;
+
+    /// <summary>
+    /// 本の読み上げ設定
+    /// </summary>
+    public BookOptions Options { get; } = options;
+
+    /// <summary>
+    /// 読み上げテキストの配列
+    /// </summary>
+    public required ScriptLine[] ScriptLines { get; set; }
+}
diff --git a/KoeBook/Models/GenerationState.cs b/KoeBook.Core/Models/GenerationState.cs
similarity index 94%
rename from KoeBook/Models/GenerationState.cs
rename to KoeBook.Core/Models/GenerationState.cs
index b1a09c5..9dfe9c1 100644
--- a/KoeBook/Models/GenerationState.cs
+++ b/KoeBook.Core/Models/GenerationState.cs
@@ -1,6 +1,6 @@
 using System.Runtime.Serialization;
 
-namespace KoeBook.Models;
+namespace KoeBook.Core.Models;
 
 public enum GenerationState
 {
diff --git a/KoeBook.Core/Models/ScriptLine.cs b/KoeBook.Core/Models/ScriptLine.cs
new file mode 100644
index 0000000..b79f015
--- /dev/null
+++ b/KoeBook.Core/Models/ScriptLine.cs
@@ -0,0 +1,27 @@
+namespace KoeBook.Core.Models;
+
+/// <summary>
+/// 読み上げ1行分
+/// </summary>
+public class ScriptLine(string id, string text, string character, string style)
+{
+    /// <summary>
+    /// 読み上げ位置との関連付け
+    /// </summary>
+    public string Id { get; } = id;
+
+    /// <summary>
+    /// 読み上げテキスト
+    /// </summary>
+    public string Text { get; } = text;
+
+    /// <summary>
+    /// 話者
+    /// </summary>
+    public string Character { get; set; } = character;
+
+    /// <summary>
+    /// 話者のスタイル
+    /// </summary>
+    public string Style { get; set; } = style;
+}
diff --git a/KoeBook/Models/SourceType.cs b/KoeBook.Core/Models/SourceType.cs
similarity index 85%
rename from KoeBook/Models/SourceType.cs
rename to KoeBook.Core/Models/SourceType.cs
index 10bb4ce..bc59068 100644
--- a/KoeBook/Models/SourceType.cs
+++ b/KoeBook.Core/Models/SourceType.cs
@@ -1,6 +1,6 @@
 using System.Runtime.Serialization;
 
-namespace KoeBook.Models;
+namespace KoeBook.Core.Models;
 
 public enum SourceType
 {
diff --git a/KoeBook/App.xaml.cs b/KoeBook/App.xaml.cs
index 2686ae7..9658cb1 100644
--- a/KoeBook/App.xaml.cs
+++ b/KoeBook/App.xaml.cs
@@ -24,15 +24,12 @@ public partial class App : Application
     // https://docs.microsoft.com/dotnet/core/extensions/dependency-injection
     // https://docs.microsoft.com/dotnet/core/extensions/configuration
     // https://docs.microsoft.com/dotnet/core/extensions/logging
-    public IHost Host
-    {
-        get;
-    }
+    public IHost Host { get; }
 
     public static T GetService<T>()
         where T : class
     {
-        if ((App.Current as App)!.Host.Services.GetService(typeof(T)) is not T service)
+        if ((Current as App)!.Host.Services.GetService(typeof(T)) is not T service)
         {
             throw new ArgumentException($"{typeof(T)} needs to be registered in ConfigureServices within App.xaml.cs.");
         }
@@ -48,47 +45,48 @@ public App()
     {
         InitializeComponent();
 
-        Host = Microsoft.Extensions.Hosting.Host.
-        CreateDefaultBuilder().
-        UseContentRoot(AppContext.BaseDirectory).
-        ConfigureServices((context, services) =>
-        {
-            // Default Activation Handler
-            services.AddTransient<ActivationHandler<LaunchActivatedEventArgs>, DefaultActivationHandler>();
-
-            // Other Activation Handlers
-            services.AddTransient<IActivationHandler, AppNotificationActivationHandler>();
-
-            // Services
-            services.AddSingleton<IAppNotificationService, AppNotificationService>();
-            services.AddSingleton<ILocalSettingsService, LocalSettingsService>();
-            services.AddSingleton<IThemeSelectorService, ThemeSelectorService>();
-            services.AddTransient<INavigationViewService, NavigationViewService>();
-            services.AddSingleton<ITabViewService, TabViewService>();
-
-            services.AddSingleton<IGenerationTaskService, GenerationTaskService>();
-            services.AddSingleton<IActivationService, ActivationService>();
-            services.AddSingleton<IPageService, PageService>();
-            services.AddSingleton<INavigationService, NavigationService>();
-            services.AddSingleton<IDialogService, DialogService>();
-
-            // Core Services
-            services.AddSingleton<IFileService, FileService>();
-
-            // Views and ViewModels
-            services.AddTransient<SettingsViewModel>();
-            services.AddTransient<SettingsPage>();
-            services.AddTransient<MainViewModel>();
-            services.AddTransient<TaskListViewModel>();
-            services.AddTransient<MainPage>();
-            services.AddTransient<ShellPage>();
-            services.AddTransient<ShellViewModel>();
-            services.AddTransient<EditDetailsViewModel>();
-
-            // Configuration
-            services.Configure<LocalSettingsOptions>(context.Configuration.GetSection(nameof(LocalSettingsOptions)));
-        }).
-        Build();
+        Host = Microsoft.Extensions.Hosting.Host
+            .CreateDefaultBuilder()
+            .UseContentRoot(AppContext.BaseDirectory)
+            .ConfigureServices((context, services) =>
+            {
+                // Default Activation Handler
+                services.AddTransient<ActivationHandler<LaunchActivatedEventArgs>, DefaultActivationHandler>();
+
+                // Other Activation Handlers
+                services.AddTransient<IActivationHandler, AppNotificationActivationHandler>();
+
+                // Services
+                services.AddSingleton<IAppNotificationService, AppNotificationService>();
+                services.AddSingleton<ILocalSettingsService, LocalSettingsService>();
+                services.AddSingleton<IThemeSelectorService, ThemeSelectorService>();
+                services.AddTransient<INavigationViewService, NavigationViewService>();
+                services.AddSingleton<ITabViewService, TabViewService>();
+
+                services.AddSingleton<IGenerationTaskService, GenerationTaskService>();
+                services.AddSingleton<IActivationService, ActivationService>();
+                services.AddSingleton<IPageService, PageService>();
+                services.AddSingleton<INavigationService, NavigationService>();
+                services.AddSingleton<IDialogService, DialogService>();
+                services.AddSingleton<IDisplayStateChangeService, DisplayStateChangeService>();
+
+                // Core Services
+                services.AddSingleton<IFileService, FileService>();
+
+                // Views and ViewModels
+                services.AddTransient<SettingsViewModel>();
+                services.AddTransient<SettingsPage>();
+                services.AddTransient<MainViewModel>();
+                services.AddTransient<TaskListViewModel>();
+                services.AddTransient<MainPage>();
+                services.AddTransient<ShellPage>();
+                services.AddTransient<ShellViewModel>();
+                services.AddTransient<EditDetailsViewModel>();
+
+                // Configuration
+                services.Configure<LocalSettingsOptions>(context.Configuration.GetSection(nameof(LocalSettingsOptions)));
+            })
+            .Build();
 
         App.GetService<IAppNotificationService>().Initialize();
 
@@ -105,8 +103,8 @@ protected override async void OnLaunched(LaunchActivatedEventArgs args)
     {
         base.OnLaunched(args);
 
-        App.GetService<IAppNotificationService>().Show(string.Format("AppNotificationSamplePayload".GetLocalized(), AppContext.BaseDirectory));
+        GetService<IAppNotificationService>().Show(string.Format("AppNotificationSamplePayload".GetLocalized(), AppContext.BaseDirectory));
 
-        await App.GetService<IActivationService>().ActivateAsync(args);
+        await GetService<IActivationService>().ActivateAsync(args);
     }
 }
diff --git a/KoeBook/Components/StateProgressBar.xaml.cs b/KoeBook/Components/StateProgressBar.xaml.cs
index 4fdb6e9..4bc22c0 100644
--- a/KoeBook/Components/StateProgressBar.xaml.cs
+++ b/KoeBook/Components/StateProgressBar.xaml.cs
@@ -1,9 +1,8 @@
 using System.ComponentModel;
-using KoeBook.Contracts.Services;
+using KoeBook.Core.Models;
 using KoeBook.Models;
 using Microsoft.UI.Xaml;
 using Microsoft.UI.Xaml.Controls;
-using Windows.UI.ViewManagement;
 
 namespace KoeBook.Components;
 
diff --git a/KoeBook/KoeBook.csproj b/KoeBook/KoeBook.csproj
index 74966d7..a8f17d5 100644
--- a/KoeBook/KoeBook.csproj
+++ b/KoeBook/KoeBook.csproj
@@ -58,6 +58,10 @@
   <ItemGroup Condition="'$(DisableMsixProjectCapabilityAddedByProject)'!='true' and '$(EnableMsixTooling)'=='true'">
     <ProjectCapability Include="Msix" />
   </ItemGroup>
+
+  <ItemGroup>
+    <Folder Include="Services\CoreMocks\" />
+  </ItemGroup>
   
   <PropertyGroup Condition="'$(DisableHasPackageAndPublishMenuAddedByProject)'!='true' and '$(EnableMsixTooling)'=='true'">
     <HasPackageAndPublishMenu>true</HasPackageAndPublishMenu>
diff --git a/KoeBook/Models/GenerationTask.cs b/KoeBook/Models/GenerationTask.cs
index 122b0d4..a552685 100644
--- a/KoeBook/Models/GenerationTask.cs
+++ b/KoeBook/Models/GenerationTask.cs
@@ -1,5 +1,6 @@
 using CommunityToolkit.Mvvm.ComponentModel;
 using FastEnumUtility;
+using KoeBook.Core.Models;
 
 namespace KoeBook.Models;
 
diff --git a/KoeBook/Services/DisplayStateChangeService.cs b/KoeBook/Services/DisplayStateChangeService.cs
new file mode 100644
index 0000000..13e6b63
--- /dev/null
+++ b/KoeBook/Services/DisplayStateChangeService.cs
@@ -0,0 +1,30 @@
+using KoeBook.Contracts.Services;
+using KoeBook.Core.Contracts.Services;
+using KoeBook.Core.Models;
+
+namespace KoeBook.Services;
+
+internal class DisplayStateChangeService(IGenerationTaskService taskService) : IDisplayStateChangeService
+{
+    private readonly IGenerationTaskService _taskService = taskService;
+
+    public void UpdateProgress(BookProperties bookProperties, int progress, int maximum)
+    {
+        var taskService = _taskService; // thisをキャプチャしないようにする
+        _ = App.MainWindow.DispatcherQueue.TryEnqueue(() =>
+        {
+            var task = taskService.GetProcessingTask(bookProperties.Id);
+            task.MaximumProgress = maximum;
+            task.Progress = progress;
+        });
+    }
+
+    public void UpdateState(BookProperties bookProperties, GenerationState state)
+    {
+        var taskService = _taskService; // thisをキャプチャしないようにする
+        _ = App.MainWindow.DispatcherQueue.TryEnqueue(() =>
+        {
+            taskService.GetProcessingTask(bookProperties.Id).State = state;
+        });
+    }
+}
diff --git a/KoeBook/Services/GenerationTaskService.cs b/KoeBook/Services/GenerationTaskService.cs
index bbdedd3..c684a47 100644
--- a/KoeBook/Services/GenerationTaskService.cs
+++ b/KoeBook/Services/GenerationTaskService.cs
@@ -1,4 +1,5 @@
 using KoeBook.Contracts.Services;
+using KoeBook.Core.Models;
 using KoeBook.Models;
 
 namespace KoeBook.Services;
diff --git a/KoeBook/ViewModels/MainViewModel.cs b/KoeBook/ViewModels/MainViewModel.cs
index 0461be4..127d7ed 100644
--- a/KoeBook/ViewModels/MainViewModel.cs
+++ b/KoeBook/ViewModels/MainViewModel.cs
@@ -1,7 +1,7 @@
 using CommunityToolkit.Mvvm.ComponentModel;
 using CommunityToolkit.Mvvm.Input;
 using KoeBook.Contracts.Services;
-using KoeBook.Models;
+using KoeBook.Core.Models;
 using Microsoft.UI.Xaml.Controls;
 using Windows.Storage.Pickers;
 using WinRT.Interop;