diff --git a/locales/index.d.ts b/locales/index.d.ts
index 84a402b0de..694ee53a1f 100644
--- a/locales/index.d.ts
+++ b/locales/index.d.ts
@@ -5004,7 +5004,7 @@ export interface Locale extends ILocale {
      * お問い合わせ
      */
     "inquiry": string;
-     /**
+    /**
      * もう一度お試しください。
      */
     "tryAgain": string;
diff --git a/packages/frontend/src/components/MkNote.vue b/packages/frontend/src/components/MkNote.vue
index c518c7dd41..13273a53b4 100644
--- a/packages/frontend/src/components/MkNote.vue
+++ b/packages/frontend/src/components/MkNote.vue
@@ -174,7 +174,7 @@ import MkPoll from '@/components/MkPoll.vue';
 import MkUsersTooltip from '@/components/MkUsersTooltip.vue';
 import MkUrlPreview from '@/components/MkUrlPreview.vue';
 import MkInstanceTicker from '@/components/MkInstanceTicker.vue';
-import { pleaseLogin } from '@/scripts/please-login.js';
+import { pleaseLogin, type OpenOnRemoteOptions } from '@/scripts/please-login.js';
 import { checkWordMute } from '@/scripts/check-word-mute.js';
 import { userPage } from '@/filters/user.js';
 import number from '@/filters/number.js';
@@ -279,10 +279,10 @@ const renoteCollapsed = ref(
 	),
 );
 
-const pleaseLoginContext = {
+const pleaseLoginContext = computed<OpenOnRemoteOptions>(() => ({
 	type: 'lookup',
-	path: `https://${host}/notes/${appearNote.value.id}`,
-} as const;
+	url: `https://${host}/notes/${appearNote.value.id}`,
+}));
 
 /* Overload FunctionにLintが対応していないのでコメントアウト
 function checkMute(noteToCheck: Misskey.entities.Note, mutedWords: Array<string | string[]> | undefined | null, checkOnly: true): boolean;
@@ -417,7 +417,7 @@ if (!props.mock) {
 }
 
 function renote(viaKeyboard = false) {
-	pleaseLogin(undefined, pleaseLoginContext);
+	pleaseLogin(undefined, pleaseLoginContext.value);
 	showMovedDialog();
 
 	const { menu } = getRenoteMenu({ note: note.value, renoteButton, mock: props.mock });
@@ -427,7 +427,7 @@ function renote(viaKeyboard = false) {
 }
 
 function reply(): void {
-	pleaseLogin(undefined, pleaseLoginContext);
+	pleaseLogin(undefined, pleaseLoginContext.value);
 	if (props.mock) {
 		return;
 	}
@@ -440,7 +440,7 @@ function reply(): void {
 }
 
 function react(): void {
-	pleaseLogin(undefined, pleaseLoginContext);
+	pleaseLogin(undefined, pleaseLoginContext.value);
 	showMovedDialog();
 	if (appearNote.value.reactionAcceptance === 'likeOnly') {
 		sound.playMisskeySfx('reaction');
@@ -571,7 +571,7 @@ function showRenoteMenu(): void {
 	}
 
 	if (isMyRenote) {
-		pleaseLogin(undefined, pleaseLoginContext);
+		pleaseLogin(undefined, pleaseLoginContext.value);
 		os.popupMenu([
 			getCopyNoteLinkMenu(note.value, i18n.ts.copyLinkRenote),
 			{ type: 'divider' },
diff --git a/packages/frontend/src/components/MkNoteDetailed.vue b/packages/frontend/src/components/MkNoteDetailed.vue
index 737e9a853a..9a3e595789 100644
--- a/packages/frontend/src/components/MkNoteDetailed.vue
+++ b/packages/frontend/src/components/MkNoteDetailed.vue
@@ -209,7 +209,7 @@ import MkPoll from '@/components/MkPoll.vue';
 import MkUsersTooltip from '@/components/MkUsersTooltip.vue';
 import MkUrlPreview from '@/components/MkUrlPreview.vue';
 import MkInstanceTicker from '@/components/MkInstanceTicker.vue';
-import { pleaseLogin } from '@/scripts/please-login.js';
+import { pleaseLogin, type OpenOnRemoteOptions } from '@/scripts/please-login.js';
 import { checkWordMute } from '@/scripts/check-word-mute.js';
 import { userPage } from '@/filters/user.js';
 import { notePage } from '@/filters/note.js';
@@ -297,10 +297,10 @@ const conversation = ref<Misskey.entities.Note[]>([]);
 const replies = ref<Misskey.entities.Note[]>([]);
 const canRenote = computed(() => ['public', 'home'].includes(appearNote.value.visibility) || appearNote.value.userId === $i?.id);
 
-const pleaseLoginContext = {
+const pleaseLoginContext = computed<OpenOnRemoteOptions>(() => ({
 	type: 'lookup',
-	path: `https://${host}/notes/${appearNote.value.id}`,
-} as const;
+	url: `https://${host}/notes/${appearNote.value.id}`,
+}));
 
 const keymap = {
 	'r': () => reply(),
@@ -402,7 +402,7 @@ if (appearNote.value.reactionAcceptance === 'likeOnly') {
 }
 
 function renote() {
-	pleaseLogin(undefined, pleaseLoginContext);
+	pleaseLogin(undefined, pleaseLoginContext.value);
 	showMovedDialog();
 
 	const { menu } = getRenoteMenu({ note: note.value, renoteButton });
@@ -410,7 +410,7 @@ function renote() {
 }
 
 function reply(): void {
-	pleaseLogin(undefined, pleaseLoginContext);
+	pleaseLogin(undefined, pleaseLoginContext.value);
 	showMovedDialog();
 	os.post({
 		reply: appearNote.value,
@@ -421,7 +421,7 @@ function reply(): void {
 }
 
 function react(): void {
-	pleaseLogin(undefined, pleaseLoginContext);
+	pleaseLogin(undefined, pleaseLoginContext.value);
 	showMovedDialog();
 	if (appearNote.value.reactionAcceptance === 'likeOnly') {
 		sound.playMisskeySfx('reaction');
@@ -505,7 +505,7 @@ async function clip(): Promise<void> {
 
 function showRenoteMenu(): void {
 	if (!isMyRenote) return;
-	pleaseLogin(undefined, pleaseLoginContext);
+	pleaseLogin(undefined, pleaseLoginContext.value);
 	os.popupMenu([{
 		text: i18n.ts.unrenote,
 		icon: 'ti ti-trash',
diff --git a/packages/frontend/src/components/MkPoll.vue b/packages/frontend/src/components/MkPoll.vue
index 82e2a605f1..72bd8f4f6c 100644
--- a/packages/frontend/src/components/MkPoll.vue
+++ b/packages/frontend/src/components/MkPoll.vue
@@ -36,6 +36,7 @@ import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { host } from '@/config.js';
 import { useInterval } from '@/scripts/use-interval.js';
+import type { OpenOnRemoteOptions } from '@/scripts/please-login.js';
 
 const props = defineProps<{
 	noteId: string;
@@ -61,10 +62,10 @@ const timer = computed(() => i18n.tsx._poll[
 
 const showResult = ref(props.readOnly || isVoted.value);
 
-const pleaseLoginContext = {
+const pleaseLoginContext = computed<OpenOnRemoteOptions>(() => ({
 	type: 'lookup',
-	path: `https://${host}/notes/${props.note.id}`,
-} as const;
+	url: `https://${host}/notes/${props.noteId}`,
+}));
 
 // 期限付きアンケート
 if (props.poll.expiresAt) {
@@ -82,7 +83,7 @@ if (props.poll.expiresAt) {
 }
 
 const vote = async (id) => {
-	pleaseLogin(undefined, pleaseLoginContext);
+	pleaseLogin(undefined, pleaseLoginContext.value);
 
 	if (props.readOnly || closed.value || isVoted.value) return;
 
diff --git a/packages/frontend/src/components/MkSignin.vue b/packages/frontend/src/components/MkSignin.vue
index 746ddd7154..a123bbddc6 100644
--- a/packages/frontend/src/components/MkSignin.vue
+++ b/packages/frontend/src/components/MkSignin.vue
@@ -236,12 +236,14 @@ function openRemote(options: OpenOnRemoteOptions, targetHost?: string): void {
 	switch (options.type) {
 		case 'web':
 		case 'lookup': {
-			let _path = options.path;
+			let _path: string;
 
 			if (options.type === 'lookup') {
-				// TODO: v2024.2.0以降が浸透してきたら正式なURLに変更する▼
+				// TODO: v2024.7.0以降が浸透してきたら正式なURLに変更する▼
 				// _path = `/lookup?uri=${encodeURIComponent(_path)}`;
-				_path = `/authorize-follow?acct=${encodeURIComponent(_path)}`;
+				_path = `/authorize-follow?acct=${encodeURIComponent(options.url)}`;
+			} else {
+				_path = options.path;
 			}
 
 			if (targetHost) {
@@ -252,7 +254,7 @@ function openRemote(options: OpenOnRemoteOptions, targetHost?: string): void {
 			break;
 		}
 		case 'share': {
-			const params = query(options.params);			
+			const params = query(options.params);
 			if (targetHost) {
 				window.open(`https://${targetHost}/share?${params}`, '_blank', 'noopener');
 			} else {
diff --git a/packages/frontend/src/scripts/please-login.ts b/packages/frontend/src/scripts/please-login.ts
index b04062a58a..18f05bc7f4 100644
--- a/packages/frontend/src/scripts/please-login.ts
+++ b/packages/frontend/src/scripts/please-login.ts
@@ -9,13 +9,38 @@ import { i18n } from '@/i18n.js';
 import { popup } from '@/os.js';
 
 export type OpenOnRemoteOptions = {
+	/**
+	 * 外部のMisskey Webで特定のパスを開く
+	 */
 	type: 'web';
+
+	/**
+	 * 内部パス（例: `/settings`）
+	 */
 	path: string;
 } | {
+	/**
+	 * 外部のMisskey Webで照会する
+	 */
 	type: 'lookup';
-	path: string;	
+
+	/**
+	 * 照会したいエンティティのURL
+	 *
+	 * （例: `https://misskey.example.com/notes/abcdexxxxyz`）
+	 */
+	url: string;
 } | {
+	/**
+	 * 外部のMisskeyでノートする
+	 */
 	type: 'share';
+
+	/**
+	 * `/share` ページに渡すクエリストリング
+	 *
+	 * @see https://go.misskey-hub.net/spec/share/
+	 */
 	params: Record<string, string>;
 };
 
diff --git a/packages/frontend/src/scripts/url.ts b/packages/frontend/src/scripts/url.ts
index c477fb5506..5a8265af9e 100644
--- a/packages/frontend/src/scripts/url.ts
+++ b/packages/frontend/src/scripts/url.ts
@@ -23,6 +23,6 @@ export function appendQuery(url: string, query: string): string {
 }
 
 export function extractDomain(url: string) {
-	const match = url.match(/^(https)?:?\/{0,2}([^\/]+)/);
-	return match ? match[2] : null;
+	const match = url.match(/^(?:https?:)?(?:\/\/)?(?:[^@\n]+@)?([^:\/\n]+)/im);
+	return match ? match[1] : null;
 }