diff --git a/locales/ja-JP.yml b/locales/ja-JP.yml
index c52762bf38..f64246d155 100644
--- a/locales/ja-JP.yml
+++ b/locales/ja-JP.yml
@@ -425,7 +425,7 @@ quoteQuestion: "引用として添付しますか？"
 noMessagesYet: "まだチャットはありません"
 newMessageExists: "新しいメッセージがあります"
 onlyOneFileCanBeAttached: "メッセージに添付できるファイルはひとつです"
-signinRequired: "ログインしてください"
+signinRequired: "続行する前に、サインアップまたはサインインが必要です"
 invitations: "招待"
 invitationCode: "招待コード"
 checking: "確認しています"
diff --git a/packages/client/src/components/signin-dialog.vue b/packages/client/src/components/signin-dialog.vue
index 5c2048e7b0..848b11fada 100644
--- a/packages/client/src/components/signin-dialog.vue
+++ b/packages/client/src/components/signin-dialog.vue
@@ -2,12 +2,12 @@
 <XModalWindow ref="dialog"
 	:width="370"
 	:height="400"
-	@close="dialog.close()"
+	@close="onClose"
 	@closed="emit('closed')"
 >
 	<template #header>{{ $ts.login }}</template>
 
-	<MkSignin :auto-set="autoSet" @login="onLogin"/>
+	<MkSignin :auto-set="autoSet" :message="message" @login="onLogin"/>
 </XModalWindow>
 </template>
 
@@ -18,17 +18,25 @@ import MkSignin from './signin.vue';
 
 const props = withDefaults(defineProps<{
 	autoSet?: boolean;
+	message?: string,
 }>(), {
 	autoSet: false,
+	message: ''
 });
 
 const emit = defineEmits<{
-	(e: 'done'): void;
-	(e: 'closed'): void;
+	(ev: 'done'): void;
+	(ev: 'closed'): void;
+	(ev: 'cancelled'): void;
 }>();
 
 const dialog = $ref<InstanceType<typeof XModalWindow>>();
 
+function onClose() {
+	emit('cancelled');
+	dialog.close();
+}
+
 function onLogin(res) {
 	emit('done', res);
 	dialog.close();
diff --git a/packages/client/src/components/signin.vue b/packages/client/src/components/signin.vue
index d140e143d3..e3d92dc431 100644
--- a/packages/client/src/components/signin.vue
+++ b/packages/client/src/components/signin.vue
@@ -1,41 +1,44 @@
 <template>
 <form class="eppvobhk _monolithic_" :class="{ signing, totpLogin }" @submit.prevent="onSubmit">
 	<div class="auth _section _formRoot">
-		<div v-show="withAvatar" class="avatar" :style="{ backgroundImage: user ? `url('${ user.avatarUrl }')` : null }"></div>
+		<div v-show="withAvatar" class="avatar" :style="{ backgroundImage: user ? `url('${ user.avatarUrl }')` : null, marginBottom: message ? '1.5em' : null }"></div>
+		<MkInfo v-if="message">
+			{{ message }}
+		</MkInfo>
 		<div v-if="!totpLogin" class="normal-signin">
-			<MkInput v-model="username" class="_formBlock" :placeholder="$ts.username" type="text" pattern="^[a-zA-Z0-9_]+$" spellcheck="false" autofocus required data-cy-signin-username @update:modelValue="onUsernameChange">
+			<MkInput v-model="username" class="_formBlock" :placeholder="i18n.ts.username" type="text" pattern="^[a-zA-Z0-9_]+$" spellcheck="false" autofocus required data-cy-signin-username @update:modelValue="onUsernameChange">
 				<template #prefix>@</template>
 				<template #suffix>@{{ host }}</template>
 			</MkInput>
-			<MkInput v-if="!user || user && !user.usePasswordLessLogin" v-model="password" class="_formBlock" :placeholder="$ts.password" type="password" :with-password-toggle="true" required data-cy-signin-password>
+			<MkInput v-if="!user || user && !user.usePasswordLessLogin" v-model="password" class="_formBlock" :placeholder="i18n.ts.password" type="password" :with-password-toggle="true" required data-cy-signin-password>
 				<template #prefix><i class="fas fa-lock"></i></template>
-				<template #caption><button class="_textButton" type="button" @click="resetPassword">{{ $ts.forgotPassword }}</button></template>
+				<template #caption><button class="_textButton" type="button" @click="resetPassword">{{ i18n.ts.forgotPassword }}</button></template>
 			</MkInput>
 			<MkCaptcha v-if="meta.enableHcaptcha" ref="hcaptcha" v-model="hCaptchaResponse" class="_formBlock captcha" provider="hcaptcha" :sitekey="meta.hcaptchaSiteKey"/>
 			<MkCaptcha v-if="meta.enableRecaptcha" ref="recaptcha" v-model="reCaptchaResponse" class="_formBlock captcha" provider="recaptcha" :sitekey="meta.recaptchaSiteKey"/>
-			<MkButton class="_formBlock" type="submit" primary :disabled="signing" style="margin: 0 auto;">{{ signing ? $ts.loggingIn : $ts.login }}</MkButton>
+			<MkButton class="_formBlock" type="submit" primary :disabled="signing" style="margin: 0 auto;">{{ signing ? i18n.ts.loggingIn : i18n.ts.login }}</MkButton>
 		</div>
 		<div v-if="totpLogin" class="2fa-signin" :class="{ securityKeys: user && user.securityKeys }">
 			<div v-if="user && user.securityKeys" class="twofa-group tap-group">
-				<p>{{ $ts.tapSecurityKey }}</p>
+				<p>{{ i18n.ts.tapSecurityKey }}</p>
 				<MkButton v-if="!queryingKey" @click="queryKey">
-					{{ $ts.retry }}
+					{{ i18n.ts.retry }}
 				</MkButton>
 			</div>
 			<div v-if="user && user.securityKeys" class="or-hr">
-				<p class="or-msg">{{ $ts.or }}</p>
+				<p class="or-msg">{{ i18n.ts.or }}</p>
 			</div>
 			<div class="twofa-group totp-group">
-				<p style="margin-bottom:0;">{{ $ts.twoStepAuthentication }}</p>
+				<p style="margin-bottom:0;">{{ i18n.ts.twoStepAuthentication }}</p>
 				<MkInput v-if="user && user.usePasswordLessLogin" v-model="password" type="password" :with-password-toggle="true" required>
-					<template #label>{{ $ts.password }}</template>
+					<template #label>{{ i18n.ts.password }}</template>
 					<template #prefix><i class="fas fa-lock"></i></template>
 				</MkInput>
 				<MkInput v-model="token" type="text" pattern="^[0-9]{6}$" autocomplete="off" spellcheck="false" required>
-					<template #label>{{ $ts.token }}</template>
+					<template #label>{{ i18n.ts.token }}</template>
 					<template #prefix><i class="fas fa-gavel"></i></template>
 				</MkInput>
-				<MkButton type="submit" :disabled="signing" primary style="margin: 0 auto;">{{ signing ? $ts.loggingIn : $ts.login }}</MkButton>
+				<MkButton type="submit" :disabled="signing" primary style="margin: 0 auto;">{{ signing ? i18n.ts.loggingIn : i18n.ts.login }}</MkButton>
 			</div>
 		</div>
 	</div>
@@ -47,199 +50,192 @@
 </form>
 </template>
 
-<script lang="ts">
-import { defineAsyncComponent, defineComponent } from 'vue';
+<script lang="ts" setup>
+import { defineAsyncComponent } from 'vue';
 import { toUnicode } from 'punycode/';
 import MkButton from '@/components/ui/button.vue';
 import MkInput from '@/components/form/input.vue';
-import { apiUrl, host } from '@/config';
+import MkInfo from '@/components/ui/info.vue';
+import { apiUrl, host as configHost } from '@/config';
 import { byteify, hexify } from '@/scripts/2fa';
 import * as os from '@/os';
 import { login } from '@/account';
 import { showSuspendedDialog } from '../scripts/show-suspended-dialog';
+import { instance } from '@/instance';
+import { i18n } from '@/i18n';
 
-export default defineComponent({
-	components: {
-		MkButton,
-		MkInput,
-		MkCaptcha: defineAsyncComponent(() => import('./captcha.vue')),
+const MkCaptcha = defineAsyncComponent(() => import('./captcha.vue'));
+
+let signing = $ref(false);
+let user = $ref(null);
+let username = $ref('');
+let password = $ref('');
+let token = $ref('');
+let host = $ref(toUnicode(configHost));
+let totpLogin = $ref(false);
+let credential = $ref(null);
+let challengeData = $ref(null);
+let queryingKey = $ref(false);
+let hCaptchaResponse = $ref(null);
+let reCaptchaResponse = $ref(null);
+
+const meta = $computed(() => instance);
+
+const emit = defineEmits<{
+	(ev: 'login', v: any): void;
+}>();
+
+const props = defineProps({
+	withAvatar: {
+		type: Boolean,
+		required: false,
+		default: true
 	},
-
-	props: {
-		withAvatar: {
-			type: Boolean,
-			required: false,
-			default: true
-		},
-		autoSet: {
-			type: Boolean,
-			required: false,
-			default: false,
-		}
+	autoSet: {
+		type: Boolean,
+		required: false,
+		default: false,
 	},
-
-	emits: ['login'],
-
-	data() {
-		return {
-			signing: false,
-			user: null,
-			username: '',
-			password: '',
-			token: '',
-			apiUrl,
-			host: toUnicode(host),
-			totpLogin: false,
-			credential: null,
-			challengeData: null,
-			queryingKey: false,
-			hCaptchaResponse: null,
-			reCaptchaResponse: null,
-		};
-	},
-
-	computed: {
-		meta() {
-			return this.$instance;
-		},
-	},
-
-	methods: {
-		onUsernameChange() {
-			os.api('users/show', {
-				username: this.username
-			}).then(user => {
-				this.user = user;
-			}, () => {
-				this.user = null;
-			});
-		},
-
-		onLogin(res) {
-			if (this.autoSet) {
-				return login(res.i);
-			} else {
-				return;
-			}
-		},
-
-		queryKey() {
-			this.queryingKey = true;
-			return navigator.credentials.get({
-				publicKey: {
-					challenge: byteify(this.challengeData.challenge, 'base64'),
-					allowCredentials: this.challengeData.securityKeys.map(key => ({
-						id: byteify(key.id, 'hex'),
-						type: 'public-key',
-						transports: ['usb', 'nfc', 'ble', 'internal']
-					})),
-					timeout: 60 * 1000
-				}
-			}).catch(() => {
-				this.queryingKey = false;
-				return Promise.reject(null);
-			}).then(credential => {
-				this.queryingKey = false;
-				this.signing = true;
-				return os.api('signin', {
-					username: this.username,
-					password: this.password,
-					'hcaptcha-response': this.hCaptchaResponse,
-					'g-recaptcha-response': this.reCaptchaResponse,
-					signature: hexify(credential.response.signature),
-					authenticatorData: hexify(credential.response.authenticatorData),
-					clientDataJSON: hexify(credential.response.clientDataJSON),
-					credentialId: credential.id,
-					challengeId: this.challengeData.challengeId,
-				});
-			}).then(res => {
-				this.$emit('login', res);
-				return this.onLogin(res);
-			}).catch(err => {
-				if (err === null) return;
-				os.alert({
-					type: 'error',
-					text: this.$ts.signinFailed
-				});
-				this.signing = false;
-			});
-		},
-
-		onSubmit() {
-			this.signing = true;
-			if (!this.totpLogin && this.user && this.user.twoFactorEnabled) {
-				if (window.PublicKeyCredential && this.user.securityKeys) {
-					os.api('signin', {
-						username: this.username,
-						password: this.password,
-						'hcaptcha-response': this.hCaptchaResponse,
-						'g-recaptcha-response': this.reCaptchaResponse,
-					}).then(res => {
-						this.totpLogin = true;
-						this.signing = false;
-						this.challengeData = res;
-						return this.queryKey();
-					}).catch(this.loginFailed);
-				} else {
-					this.totpLogin = true;
-					this.signing = false;
-				}
-			} else {
-				os.api('signin', {
-					username: this.username,
-					password: this.password,
-					'hcaptcha-response': this.hCaptchaResponse,
-					'g-recaptcha-response': this.reCaptchaResponse,
-					token: this.user && this.user.twoFactorEnabled ? this.token : undefined,
-				}).then(res => {
-					this.$emit('login', res);
-					this.onLogin(res);
-				}).catch(this.loginFailed);
-			}
-		},
-
-		loginFailed(err) {
-			switch (err.id) {
-				case '6cc579cc-885d-43d8-95c2-b8c7fc963280': {
-					os.alert({
-						type: 'error',
-						title: this.$ts.loginFailed,
-						text: this.$ts.noSuchUser
-					});
-					break;
-				}
-				case '932c904e-9460-45b7-9ce6-7ed33be7eb2c': {
-					os.alert({
-						type: 'error',
-						title: this.$ts.loginFailed,
-						text: this.$ts.incorrectPassword,
-					});
-					break;
-				}
-				case 'e03a5f46-d309-4865-9b69-56282d94e1eb': {
-					showSuspendedDialog();
-					break;
-				}
-				default: {
-					os.alert({
-						type: 'error',
-						title: this.$ts.loginFailed,
-						text: JSON.stringify(err)
-					});
-				}
-			}
-
-			this.challengeData = null;
-			this.totpLogin = false;
-			this.signing = false;
-		},
-
-		resetPassword() {
-			os.popup(defineAsyncComponent(() => import('@/components/forgot-password.vue')), {}, {
-			}, 'closed');
-		}
+	message: {
+		type: String,
+		required: false,
+		default: ''
 	}
 });
+
+function onUsernameChange() {
+	os.api('users/show', {
+		username: username
+	}).then(user => {
+		user = user;
+	}, () => {
+		user = null;
+	});
+}
+
+function onLogin(res) {
+	if (props.autoSet) {
+		return login(res.i);
+	}
+}
+
+function queryKey() {
+	queryingKey = true;
+	return navigator.credentials.get({
+		publicKey: {
+			challenge: byteify(challengeData.challenge, 'base64'),
+			allowCredentials: challengeData.securityKeys.map(key => ({
+				id: byteify(key.id, 'hex'),
+				type: 'public-key',
+				transports: ['usb', 'nfc', 'ble', 'internal']
+			})),
+			timeout: 60 * 1000
+		}
+	}).catch(() => {
+		queryingKey = false;
+		return Promise.reject(null);
+	}).then(credential => {
+		queryingKey = false;
+		signing = true;
+		return os.api('signin', {
+			username,
+			password,
+			signature: hexify(credential.response.signature),
+			authenticatorData: hexify(credential.response.authenticatorData),
+			clientDataJSON: hexify(credential.response.clientDataJSON),
+			credentialId: credential.id,
+			challengeId: challengeData.challengeId,
+      'hcaptcha-response': hCaptchaResponse,
+			'g-recaptcha-response': reCaptchaResponse,
+		});
+	}).then(res => {
+		emit('login', res);
+		return onLogin(res);
+	}).catch(err => {
+		if (err === null) return;
+		os.alert({
+			type: 'error',
+			text: i18n.ts.signinFailed
+		});
+		signing = false;
+	});
+}
+
+function onSubmit() {
+	signing = true;
+	console.log('submit')
+	if (!totpLogin && user && user.twoFactorEnabled) {
+		if (window.PublicKeyCredential && user.securityKeys) {
+			os.api('signin', {
+				username,
+				password,
+        'hcaptcha-response': hCaptchaResponse,
+        'g-recaptcha-response': reCaptchaResponse,
+			}).then(res => {
+				totpLogin = true;
+				signing = false;
+				challengeData = res;
+				return queryKey();
+			}).catch(loginFailed);
+		} else {
+			totpLogin = true;
+			signing = false;
+		}
+	} else {
+		os.api('signin', {
+			username,
+			password,
+      'hcaptcha-response': hCaptchaResponse,
+			'g-recaptcha-response': reCaptchaResponse,
+			token: user && user.twoFactorEnabled ? token : undefined
+		}).then(res => {
+			emit('login', res);
+			onLogin(res);
+		}).catch(loginFailed);
+	}
+}
+
+function loginFailed(err) {
+	switch (err.id) {
+		case '6cc579cc-885d-43d8-95c2-b8c7fc963280': {
+			os.alert({
+				type: 'error',
+				title: i18n.ts.loginFailed,
+				text: i18n.ts.noSuchUser
+			});
+			break;
+		}
+		case '932c904e-9460-45b7-9ce6-7ed33be7eb2c': {
+			os.alert({
+				type: 'error',
+				title: i18n.ts.loginFailed,
+				text: i18n.ts.incorrectPassword,
+			});
+			break;
+		}
+		case 'e03a5f46-d309-4865-9b69-56282d94e1eb': {
+			showSuspendedDialog();
+			break;
+		}
+		default: {
+			console.log(err)
+			os.alert({
+				type: 'error',
+				title: i18n.ts.loginFailed,
+				text: JSON.stringify(err)
+			});
+		}
+	}
+
+	challengeData = null;
+	totpLogin = false;
+	signing = false;
+}
+
+function resetPassword() {
+	os.popup(defineAsyncComponent(() => import('@/components/forgot-password.vue')), {}, {
+	}, 'closed');
+}
 </script>
 
 <style lang="scss" scoped>
diff --git a/packages/client/src/scripts/please-login.ts b/packages/client/src/scripts/please-login.ts
index aeaafa124b..e21a6d2ed3 100644
--- a/packages/client/src/scripts/please-login.ts
+++ b/packages/client/src/scripts/please-login.ts
@@ -1,14 +1,21 @@
+import { defineAsyncComponent } from 'vue';
 import { $i } from '@/account';
 import { i18n } from '@/i18n';
-import { alert } from '@/os';
+import { popup } from '@/os';
 
-export function pleaseLogin() {
+export function pleaseLogin(path?: string) {
 	if ($i) return;
 
-	alert({
-		title: i18n.ts.signinRequired,
-		text: null
-	});
+	popup(defineAsyncComponent(() => import('@/components/signin-dialog.vue')), {
+		autoSet: true,
+		message: i18n.ts.signinRequired
+	}, {
+		cancelled: () => {
+			if (path) {
+				window.location.href = path;
+			}
+		},
+	}, 'closed');
 
 	throw new Error('signin required');
 }