diff --git a/Pixiview/App.cs b/Pixiview/App.cs
index b944ea3..461bbb3 100644
--- a/Pixiview/App.cs
+++ b/Pixiview/App.cs
@@ -26,6 +26,7 @@ namespace Pixiview
 
         private void InitPreferences()
         {
+            Configs.IsOnR18 = Preferences.Get(Configs.IsOnR18Key, false);
             var isProxied = Preferences.Get(Configs.IsProxiedKey, false);
             if (isProxied)
             {
diff --git a/Pixiview/Illust/FavoritesPage.xaml.cs b/Pixiview/Illust/FavoritesPage.xaml.cs
index c1a48a6..e3673a4 100644
--- a/Pixiview/Illust/FavoritesPage.xaml.cs
+++ b/Pixiview/Illust/FavoritesPage.xaml.cs
@@ -17,10 +17,6 @@ namespace Pixiview.Illust
 
         protected override bool IsFavoriteVisible => false;
 
-        public override void OnUnload()
-        {
-        }
-
         protected override void OnAppearing()
         {
             //base.OnAppearing();
diff --git a/Pixiview/Illust/IllustCollectionPage.cs b/Pixiview/Illust/IllustCollectionPage.cs
index 8fd8bab..e1bf2cd 100644
--- a/Pixiview/Illust/IllustCollectionPage.cs
+++ b/Pixiview/Illust/IllustCollectionPage.cs
@@ -443,7 +443,8 @@ namespace Pixiview.Illust
                 lastUpdated = now;
             }
 
-            var data = DoGetIllustList(illustData).Where(i => i != null);
+            var r18 = Configs.IsOnR18;
+            var data = DoGetIllustList(illustData).Where(i => i != null && (r18 || !i.IsRestrict));
 
             var collection = new IllustCollection(data);
             if (IsFavoriteVisible)
diff --git a/Pixiview/Illust/RecommendsPage.xaml b/Pixiview/Illust/RecommendsPage.xaml
index ecf6382..e9d8789 100644
--- a/Pixiview/Illust/RecommendsPage.xaml
+++ b/Pixiview/Illust/RecommendsPage.xaml
@@ -14,7 +14,7 @@
     <Grid>
         <ScrollView HorizontalOptions="Fill" HorizontalScrollBarVisibility="Never">
             <StackLayout>
-                <u:FlowLayout ItemsSource="{Binding Users}"
+                <u:FlowLayout ItemsSource="{Binding Users}" IsVisible="{Binding UserRecommendsVisible}"
                               HorizontalOptions="Fill" Column="{Binding UserColumns}"
                               Margin="16" RowSpacing="16"
                               ItemTemplate="{StaticResource userCardView}"/>
diff --git a/Pixiview/Illust/RecommendsPage.xaml.cs b/Pixiview/Illust/RecommendsPage.xaml.cs
index 3a9014b..2768da8 100644
--- a/Pixiview/Illust/RecommendsPage.xaml.cs
+++ b/Pixiview/Illust/RecommendsPage.xaml.cs
@@ -15,6 +15,8 @@ namespace Pixiview.Illust
             nameof(Users), typeof(List<IllustUserItem>), typeof(RecommendsPage));
         public static readonly BindableProperty UserColumnsProperty = BindableProperty.Create(
             nameof(UserColumns), typeof(int), typeof(RecommendsPage), 1);
+        public static readonly BindableProperty UserRecommendsVisibleProperty = BindableProperty.Create(
+            nameof(UserRecommendsVisible), typeof(bool), typeof(RecommendsPage));
 
         public List<IllustUserItem> Users
         {
@@ -26,6 +28,11 @@ namespace Pixiview.Illust
             get => (int)GetValue(UserColumnsProperty);
             set => SetValue(UserColumnsProperty, value);
         }
+        public bool UserRecommendsVisible
+        {
+            get => (bool)GetValue(UserRecommendsVisibleProperty);
+            set => SetValue(UserRecommendsVisibleProperty, value);
+        }
 
         private readonly Command<IllustUserItem> commandUserTapped;
 
@@ -200,6 +207,7 @@ namespace Pixiview.Illust
 
         private void DoLoadUserRecommendsData(IllustData data)
         {
+            var r18 = Configs.IsOnR18;
             var defaultImage = StyleDefinition.DownloadBackground;
             var users = data.body.page.recommendUser.Select(u =>
             {
@@ -229,6 +237,15 @@ namespace Pixiview.Illust
                         item3 = data.body.thumbnails.illust.FirstOrDefault(l => l.illustId == id)?.ConvertToItem(defaultImage);
                     }
                 }
+                if (!r18)
+                {
+                    if (item1?.IsRestrict == true ||
+                        item2?.IsRestrict == true ||
+                        item3?.IsRestrict == true)
+                    {
+                        return null;
+                    }
+                }
                 return new IllustUserItem
                 {
                     UserId = usrId,
@@ -238,9 +255,10 @@ namespace Pixiview.Illust
                     Image2Item = item2,
                     Image3Item = item3
                 };
-            });
+            }).Where(u => u != null);
 
             var list = new List<IllustUserItem>(users);
+            UserRecommendsVisible = list.Count > 0;
             Users = list;
             Illusts = IllustCollection;
 
diff --git a/Pixiview/OptionPage.xaml b/Pixiview/OptionPage.xaml
index 9baf3ee..67d45df 100644
--- a/Pixiview/OptionPage.xaml
+++ b/Pixiview/OptionPage.xaml
@@ -8,6 +8,10 @@
     <TableView Intent="Settings" VerticalOptions="Start"
                BackgroundColor="{DynamicResource OptionBackColor}">
         <TableRoot>
+            <TableSection Title="{r:Text Illusts}">
+                <u:OptionSwitchCell Title="{r:Text R18}"
+                                    IsToggled="{Binding IsOnR18, Mode=TwoWay}"/>
+            </TableSection>
             <TableSection Title="{r:Text Proxy}">
                 <u:OptionSwitchCell Title="{r:Text Enabled}"
                                     IsToggled="{Binding IsProxied, Mode=TwoWay}"/>
diff --git a/Pixiview/OptionPage.xaml.cs b/Pixiview/OptionPage.xaml.cs
index fdad41c..770e9d9 100644
--- a/Pixiview/OptionPage.xaml.cs
+++ b/Pixiview/OptionPage.xaml.cs
@@ -7,6 +7,8 @@ namespace Pixiview
 {
     public partial class OptionPage : AdaptedPage
     {
+        public static readonly BindableProperty IsOnR18Property = BindableProperty.Create(
+            nameof(IsOnR18), typeof(bool), typeof(OptionPage));
         public static readonly BindableProperty IsProxiedProperty = BindableProperty.Create(
             nameof(IsProxied), typeof(bool), typeof(OptionPage));
         public static readonly BindableProperty HostProperty = BindableProperty.Create(
@@ -14,6 +16,11 @@ namespace Pixiview
         public static readonly BindableProperty PortProperty = BindableProperty.Create(
             nameof(Port), typeof(string), typeof(OptionPage));
 
+        public bool IsOnR18
+        {
+            get => (bool)GetValue(IsOnR18Property);
+            set => SetValue(IsOnR18Property, value);
+        }
         public bool IsProxied
         {
             get => (bool)GetValue(IsProxiedProperty);
@@ -40,6 +47,7 @@ namespace Pixiview
         {
             base.OnAppearing();
 
+            IsOnR18 = Preferences.Get(Configs.IsOnR18Key, false);
             IsProxied = Preferences.Get(Configs.IsProxiedKey, false);
             Host = Preferences.Get(Configs.HostKey, string.Empty);
             int pt = Preferences.Get(Configs.PortKey, 0);
@@ -53,9 +61,14 @@ namespace Pixiview
         {
             base.OnDisappearing();
 
+            var r18 = IsOnR18;
             var proxied = IsProxied;
             var h = Host?.Trim();
 
+            Preferences.Set(Configs.IsOnR18Key, r18);
+            Configs.IsOnR18 = r18;
+            App.DebugPrint($"r-18 filter: {r18}");
+
             Preferences.Set(Configs.IsProxiedKey, proxied);
             Preferences.Set(Configs.HostKey, h);
             var p = Port;
diff --git a/Pixiview/Resources/Languages/zh-CN.xml b/Pixiview/Resources/Languages/zh-CN.xml
index 6864f02..f3b3e2d 100644
--- a/Pixiview/Resources/Languages/zh-CN.xml
+++ b/Pixiview/Resources/Languages/zh-CN.xml
@@ -5,6 +5,7 @@
     <Cancel>取消</Cancel>
     <Yes>是</Yes>
     <No>否</No>
+    <Illusts>插画</Illusts>
     <Proxy>代理</Proxy>
     <Detail>详细</Detail>
     <Enabled>启用</Enabled>
diff --git a/Pixiview/Utils/Stores.cs b/Pixiview/Utils/Stores.cs
index 20159ac..f741b87 100644
--- a/Pixiview/Utils/Stores.cs
+++ b/Pixiview/Utils/Stores.cs
@@ -442,7 +442,8 @@ namespace Pixiview.Utils
 
     public static class Configs
     {
-        public const string IsProxiedKey = "isProxied";
+        public const string IsOnR18Key = "is_on_r18";
+        public const string IsProxiedKey = "is_proxied";
         public const string HostKey = "host";
         public const string PortKey = "port";
         public const string QueryModeKey = "query_mode";
@@ -455,6 +456,7 @@ namespace Pixiview.Utils
         public const string RefererIllustRanking = "https://www.pixiv.net/ranking.php?{0}";
         public const string RefererIllustUser = "https://www.pixiv.net/users/{0}/illustrations";
 
+        public static bool IsOnR18;
         public static WebProxy Proxy;
         private static string Prefix => Proxy == null ?
             "https://hk.tsanie.us/reverse/" :