diff --git a/data/src/main/java/one/nem/kidshift/data/impl/UserSettingsImpl.java b/data/src/main/java/one/nem/kidshift/data/impl/UserSettingsImpl.java
index c635c52..fcaf33f 100644
--- a/data/src/main/java/one/nem/kidshift/data/impl/UserSettingsImpl.java
+++ b/data/src/main/java/one/nem/kidshift/data/impl/UserSettingsImpl.java
@@ -42,8 +42,7 @@ public class UserSettingsImpl implements UserSettings {
             ApiSettingImpl apiSetting = sharedPrefUtils.getObject("api_setting", ApiSettingImpl.class);
             // TODO: リフレクションつかって一括でやる？(プロパティ数があまりにも増えるなら?), 三項演算子やめる?, デフォルト値の設定方法を改善する
             if (apiSetting != null) {
-                apiBaseUrl = apiSetting.getApiBaseUrl() == null ? "https://kidshift-beta.nem.one/" :
-                        Objects.equals(apiSetting.getApiBaseUrl(), "") ? "https://kidshift-beta.nem.one/" : apiSetting.getApiBaseUrl();
+                apiBaseUrl = apiSetting.apiBaseUrl.isEmpty() ? "https://kidshift-beta.nem.one/" : apiSetting.apiBaseUrl;
             }
         }
 
@@ -65,28 +64,46 @@ public class UserSettingsImpl implements UserSettings {
 
     public class TaskSettingImpl implements UserSettings.TaskSetting {
 
+        transient
         SharedPrefUtils sharedPrefUtils;
 
         int defaultIconColor;
 
+        String defaultIconEmoji;
+
+        TaskSettingImpl() {
+            sharedPrefUtils = sharedPrefUtilsFactory.create("user_settings");
+            TaskSettingImpl taskSetting = sharedPrefUtils.getObject("task_setting", TaskSettingImpl.class);
+            if (taskSetting != null) {
+                defaultIconColor = taskSetting.getDefaultIconColor() == 0 ? 0 : taskSetting.getDefaultIconColor();
+                defaultIconEmoji = taskSetting.getDefaultIconEmoji().isEmpty() ? "" : taskSetting.getDefaultIconEmoji();
+            }
+        }
+
+        private void save() {
+            sharedPrefUtils.saveObject("task_setting", this);
+        }
+
         @Override
         public int getDefaultIconColor() {
-            return 0;
+            return defaultIconColor;
         }
 
         @Override
         public void setDefaultIconColor(int color) {
-
+            defaultIconColor = color;
+            save();
         }
 
         @Override
         public String getDefaultIconEmoji() {
-            return "";
+            return defaultIconEmoji;
         }
 
         @Override
         public void setDefaultIconEmoji(String emoji) {
-
+            defaultIconEmoji = emoji;
+            save();
         }
     }
 }