diff --git a/ext/js/app/content-script-main.js b/ext/js/app/content-script-main.js
index 5dee4c56..ee05034e 100644
--- a/ext/js/app/content-script-main.js
+++ b/ext/js/app/content-script-main.js
@@ -24,8 +24,8 @@
 
 (async () => {
     try {
-        api.forwardLogsToBackend();
-        await yomichan.backendReady();
+        api.prepare();
+        await yomichan.prepare();
 
         const {tabId, frameId} = await api.frameInformationGet();
         if (typeof frameId !== 'number') {
diff --git a/ext/js/background/background-main.js b/ext/js/background/background-main.js
index 01e57d0f..11df1706 100644
--- a/ext/js/background/background-main.js
+++ b/ext/js/background/background-main.js
@@ -20,6 +20,8 @@
  */
 
 (() => {
+    yomichan.prepare(true);
+
     const backend = new Backend();
     backend.prepare();
 })();
diff --git a/ext/js/comm/api.js b/ext/js/comm/api.js
index d37b091a..26397d1f 100644
--- a/ext/js/comm/api.js
+++ b/ext/js/comm/api.js
@@ -22,8 +22,8 @@
 const api = (() => {
     class API {
         constructor() {
-            this._forwardLogsToBackendEnabled = false;
-            this._crossFrame = new CrossFrameAPI();
+            this._prepared = false;
+            this._crossFrame = null;
         }
 
         get crossFrame() {
@@ -31,20 +31,11 @@ const api = (() => {
         }
 
         prepare() {
+            if (this._prepared) { return; }
+            this._crossFrame = new CrossFrameAPI();
             this._crossFrame.prepare();
-        }
-
-        forwardLogsToBackend() {
-            if (this._forwardLogsToBackendEnabled) { return; }
-            this._forwardLogsToBackendEnabled = true;
-
-            yomichan.on('log', async ({error, level, context}) => {
-                try {
-                    await this.log(serializeError(error), level, context);
-                } catch (e) {
-                    // NOP
-                }
-            });
+            yomichan.on('log', this._onLog.bind(this));
+            this._prepared = true;
         }
 
         // Invoke functions
@@ -161,10 +152,6 @@ const api = (() => {
             return this._invoke('getMedia', {targets});
         }
 
-        log(error, level, context) {
-            return this._invoke('log', {error, level, context});
-        }
-
         logIndicatorClear() {
             return this._invoke('logIndicatorClear');
         }
@@ -331,10 +318,16 @@ const api = (() => {
         _checkLastError() {
             // NOP
         }
+
+        async _onLog({error, level, context}) {
+            try {
+                error = serializeError(error);
+                await this._invoke('log', {error, level, context});
+            } catch (e) {
+                // NOP
+            }
+        }
     }
 
-    // eslint-disable-next-line no-shadow
-    const api = new API();
-    api.prepare();
-    return api;
+    return new API();
 })();
diff --git a/ext/js/display/popup-main.js b/ext/js/display/popup-main.js
index 7c048b62..f1228aa6 100644
--- a/ext/js/display/popup-main.js
+++ b/ext/js/display/popup-main.js
@@ -29,8 +29,8 @@
         const documentFocusController = new DocumentFocusController();
         documentFocusController.prepare();
 
-        api.forwardLogsToBackend();
-        await yomichan.backendReady();
+        api.prepare();
+        await yomichan.prepare();
 
         const {tabId, frameId} = await api.frameInformationGet();
 
diff --git a/ext/js/display/search-main.js b/ext/js/display/search-main.js
index c7ec595a..d3e8af0b 100644
--- a/ext/js/display/search-main.js
+++ b/ext/js/display/search-main.js
@@ -30,8 +30,8 @@
         const documentFocusController = new DocumentFocusController();
         documentFocusController.prepare();
 
-        api.forwardLogsToBackend();
-        await yomichan.backendReady();
+        api.prepare();
+        await yomichan.prepare();
 
         const {tabId, frameId} = await api.frameInformationGet();
 
diff --git a/ext/js/pages/action-popup-main.js b/ext/js/pages/action-popup-main.js
index 5cc56745..99a76bdf 100644
--- a/ext/js/pages/action-popup-main.js
+++ b/ext/js/pages/action-popup-main.js
@@ -221,8 +221,8 @@ class DisplayController {
 }
 
 (async () => {
-    api.forwardLogsToBackend();
-    await yomichan.backendReady();
+    api.prepare();
+    await yomichan.prepare();
 
     api.logIndicatorClear();
 
diff --git a/ext/js/pages/info-main.js b/ext/js/pages/info-main.js
index 6cf82595..7d34d47a 100644
--- a/ext/js/pages/info-main.js
+++ b/ext/js/pages/info-main.js
@@ -54,7 +54,7 @@ function getOperatingSystemDisplayName(os) {
         const manifest = chrome.runtime.getManifest();
         const language = chrome.i18n.getUILanguage();
 
-        api.forwardLogsToBackend();
+        api.prepare();
         await yomichan.prepare();
 
         const {userAgent} = navigator;
diff --git a/ext/js/pages/permissions-main.js b/ext/js/pages/permissions-main.js
index 5b17a5dd..7c0427b9 100644
--- a/ext/js/pages/permissions-main.js
+++ b/ext/js/pages/permissions-main.js
@@ -69,7 +69,7 @@ function setupPermissionsToggles() {
             node.textContent = chrome.runtime.getURL('/');
         }
 
-        api.forwardLogsToBackend();
+        api.prepare();
         await yomichan.prepare();
 
         setupEnvironmentInfo();
diff --git a/ext/js/pages/welcome-main.js b/ext/js/pages/welcome-main.js
index 57b265dc..626cbd3a 100644
--- a/ext/js/pages/welcome-main.js
+++ b/ext/js/pages/welcome-main.js
@@ -49,7 +49,7 @@ async function setupGenericSettingsController(genericSettingController) {
         const statusFooter = new StatusFooter(document.querySelector('.status-footer-container'));
         statusFooter.prepare();
 
-        api.forwardLogsToBackend();
+        api.prepare();
         await yomichan.prepare();
 
         setupEnvironmentInfo();
diff --git a/ext/js/settings/main.js b/ext/js/settings/main.js
index 9786d196..0707ea3c 100644
--- a/ext/js/settings/main.js
+++ b/ext/js/settings/main.js
@@ -51,8 +51,8 @@ async function setupEnvironmentInfo() {
 
 (async () => {
     try {
-        api.forwardLogsToBackend();
-        await yomichan.backendReady();
+        api.prepare();
+        await yomichan.prepare();
 
         setupEnvironmentInfo();
         showExtensionInformation();
diff --git a/ext/js/settings/pitch-accents-preview-main.js b/ext/js/settings/pitch-accents-preview-main.js
index f292170a..7bc995a2 100644
--- a/ext/js/settings/pitch-accents-preview-main.js
+++ b/ext/js/settings/pitch-accents-preview-main.js
@@ -17,10 +17,14 @@
 
 /* global
  * DisplayGenerator
+ * api
  */
 
 (async () => {
     try {
+        api.prepare();
+        await yomichan.prepare();
+
         const displayGenerator = new DisplayGenerator({
             japaneseUtil: null,
             mediaLoader: null
diff --git a/ext/js/settings/popup-preview-frame-main.js b/ext/js/settings/popup-preview-frame-main.js
index dcbc0d96..f61b26dc 100644
--- a/ext/js/settings/popup-preview-frame-main.js
+++ b/ext/js/settings/popup-preview-frame-main.js
@@ -24,7 +24,8 @@
 
 (async () => {
     try {
-        api.forwardLogsToBackend();
+        api.prepare();
+        await yomichan.prepare();
 
         const {tabId, frameId} = await api.frameInformationGet();
 
diff --git a/ext/js/settings/settings-main.js b/ext/js/settings/settings-main.js
index 24248110..a7e6b7b0 100644
--- a/ext/js/settings/settings-main.js
+++ b/ext/js/settings/settings-main.js
@@ -66,7 +66,7 @@ async function setupGenericSettingsController(genericSettingController) {
         const statusFooter = new StatusFooter(document.querySelector('.status-footer-container'));
         statusFooter.prepare();
 
-        api.forwardLogsToBackend();
+        api.prepare();
         await yomichan.prepare();
 
         setupEnvironmentInfo();
diff --git a/ext/js/yomichan.js b/ext/js/yomichan.js
index 61301e30..7d101a4c 100644
--- a/ext/js/yomichan.js
+++ b/ext/js/yomichan.js
@@ -71,13 +71,13 @@ const yomichan = (() => {
             return this._isExtensionUnloaded;
         }
 
-        prepare() {
+        async prepare(isBackground=false) {
             chrome.runtime.onMessage.addListener(this._onMessage.bind(this));
-        }
 
-        backendReady() {
-            this.sendMessage({action: 'requestBackendReadySignal'});
-            return this._isBackendReadyPromise;
+            if (!isBackground) {
+                this.sendMessage({action: 'requestBackendReadySignal'});
+                await this._isBackendReadyPromise;
+            }
         }
 
         ready() {
@@ -302,5 +302,3 @@ const yomichan = (() => {
 
     return new Yomichan();
 })();
-
-yomichan.prepare();