diff --git a/packages/backend/package.json b/packages/backend/package.json
index cda2da911cae329a02149df653bd0526256aec02..0321936165bcbb1a3d913294b69ff84e715259d8 100644
--- a/packages/backend/package.json
+++ b/packages/backend/package.json
@@ -76,7 +76,7 @@
 		"@nestjs/core": "10.2.10",
 		"@nestjs/testing": "10.2.10",
 		"@peertube/http-signature": "1.7.0",
-		"@sharkey/sfm-js": "0.24.0",
+		"@sharkey/sfm-js": "0.24.1",
 		"@simplewebauthn/server": "8.3.5",
 		"@sinonjs/fake-timers": "11.2.2",
 		"@smithy/node-http-handler": "2.1.10",
diff --git a/packages/frontend/package.json b/packages/frontend/package.json
index 275a6ad0252a1a8105b4523d48c6bf0cb00b262f..496a083aa9bd0b70a6bde8c3f8a12eff4844f790 100644
--- a/packages/frontend/package.json
+++ b/packages/frontend/package.json
@@ -22,7 +22,7 @@
 		"@rollup/plugin-json": "6.1.0",
 		"@rollup/plugin-replace": "5.0.5",
 		"@rollup/pluginutils": "5.1.0",
-		"@sharkey/sfm-js": "0.24.0",
+		"@sharkey/sfm-js": "0.24.1",
 		"@syuilo/aiscript": "0.16.0",
 		"@phosphor-icons/web": "^2.0.3",
 		"@twemoji/parser": "15.0.0",
@@ -51,6 +51,7 @@
 		"insert-text-at-cursor": "0.3.0",
 		"is-file-animated": "1.0.2",
 		"json5": "2.2.3",
+		"katex": "0.16.9",
 		"matter-js": "0.19.0",
 		"misskey-js": "workspace:*",
 		"photoswipe": "5.4.3",
diff --git a/packages/frontend/src/components/MkFormula.vue b/packages/frontend/src/components/MkFormula.vue
new file mode 100644
index 0000000000000000000000000000000000000000..039cef8da82b77b5c521b03f5a2f88d98a89b380
--- /dev/null
+++ b/packages/frontend/src/components/MkFormula.vue
@@ -0,0 +1,33 @@
+<!--
+SPDX-FileCopyrightText: dakkar, MoshiBar, and other Sharkey contributors
+SPDX-License-Identifier: AGPL-3.0-only
+-->
+
+<template>
+	<div v-if="block" :class="$style.block" v-html="renderedFormula"></div>
+	<span v-else v-html="renderedFormula"></span>
+</template>
+
+<script lang="ts" setup>
+	import { computed } from 'vue';
+	import katex from 'katex';
+	import 'katex/dist/katex.min.css';
+
+	const props = defineProps<{
+		formula: string;
+		block: boolean;
+	}>();
+
+	const renderedFormula = computed(() =>
+		katex.renderToString(props.formula, {
+			throwOnError: false,
+			trust: false,
+			displayMode: props.block,
+		} as any));
+</script>
+
+<style lang="scss" module>
+	.block {
+		text-align: center;
+	}
+</style>
diff --git a/packages/frontend/src/components/global/MkMisskeyFlavoredMarkdown.ts b/packages/frontend/src/components/global/MkMisskeyFlavoredMarkdown.ts
index 60d12fdcde014b2da0a38c796d6cee2b93ecf30d..83b7ef2e78d62d2e3a0e8e82a03b470b6c70e9d1 100644
--- a/packages/frontend/src/components/global/MkMisskeyFlavoredMarkdown.ts
+++ b/packages/frontend/src/components/global/MkMisskeyFlavoredMarkdown.ts
@@ -3,7 +3,7 @@
  * SPDX-License-Identifier: AGPL-3.0-only
  */
 
-import { VNode, h } from 'vue';
+import { VNode, h, defineAsyncComponent } from 'vue';
 import * as mfm from '@sharkey/sfm-js';
 import * as Misskey from 'misskey-js';
 import MkUrl from '@/components/global/MkUrl.vue';
@@ -61,6 +61,8 @@ export default function(props: MfmProps) {
 
 	const useAnim = defaultStore.state.advancedMfm && defaultStore.state.animatedMfm ? true : props.isAnim ? true : false;
 
+	const MkFormula = defineAsyncComponent(() => import('@/components/MkFormula.vue'));
+
 	/**
 	 * Gen Vue Elements from MFM AST
 	 * @param ast MFM AST
@@ -410,11 +412,17 @@ export default function(props: MfmProps) {
 			}
 
 			case 'mathInline': {
-				return [h('code', token.props.formula)];
+				return [h(MkFormula, {
+					formula: token.props.formula,
+					block: false,
+				})];
 			}
 
 			case 'mathBlock': {
-				return [h('code', token.props.formula)];
+				return [h(MkFormula, {
+					formula: token.props.formula,
+					block: true,
+				})];
 			}
 
 			case 'search': {
diff --git a/packages/frontend/src/pages/settings/mute-block.vue b/packages/frontend/src/pages/settings/mute-block.vue
index 6419d23a7a467568bfb35b08624fa2286996b877..a996a03cced299fd38e2a1e00493670c82766b61 100644
--- a/packages/frontend/src/pages/settings/mute-block.vue
+++ b/packages/frontend/src/pages/settings/mute-block.vue
@@ -13,7 +13,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 	</MkFolder>
 
 	<MkFolder>
-		<template #icon><i class="ti ti-message-off"></i></template>
+		<template #icon><i class="ph-x-square ph-bold ph-lg"></i></template>
 		<template #label>{{ i18n.ts.hardWordMute }}</template>
 
 		<XWordMute :muted="$i!.hardMutedWords" @save="saveHardMutedWords"/>
@@ -216,11 +216,11 @@ async function toggleBlockItem(item) {
 }
 
 async function saveMutedWords(mutedWords: (string | string[])[]) {
-	await os.api('i/update', { mutedWords });
+	await os.apiWithDialog('i/update', { mutedWords });
 }
 
 async function saveHardMutedWords(hardMutedWords: (string | string[])[]) {
-	await os.api('i/update', { hardMutedWords });
+	await os.apiWithDialog('i/update', { hardMutedWords });
 }
 
 const headerActions = computed(() => []);
diff --git a/packages/frontend/src/scripts/autocomplete.ts b/packages/frontend/src/scripts/autocomplete.ts
index 6f3d3ba8e1dcbadb93ca9709cf4c7a4a04482fa8..2a9a42ace5a8004f5e258797d3e0b23235871496 100644
--- a/packages/frontend/src/scripts/autocomplete.ts
+++ b/packages/frontend/src/scripts/autocomplete.ts
@@ -101,7 +101,7 @@ export class Autocomplete {
 
 		if (isMention && this.onlyType.includes('user')) {
 			const username = text.substring(mentionIndex + 1);
-			if (username !== '' && username.match(/^[a-zA-Z0-9_.]+$/)) {
+			if (username !== '' && username.match(/^[a-zA-Z0-9_]+$/)) {
 				this.open('user', username);
 				opened = true;
 			} else if (username === '') {
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 193d294f2b00a9aed3ebb27fb9d279ec02b9b5d9..4a9777ea2b696c0c72e1690d5ee7822edc421c1e 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -110,8 +110,8 @@ importers:
         specifier: 1.7.0
         version: 1.7.0
       '@sharkey/sfm-js':
-        specifier: 0.24.0
-        version: 0.24.0
+        specifier: 0.24.1
+        version: 0.24.1
       '@simplewebauthn/server':
         specifier: 8.3.5
         version: 8.3.5
@@ -676,8 +676,8 @@ importers:
         specifier: 5.1.0
         version: 5.1.0(rollup@4.9.1)
       '@sharkey/sfm-js':
-        specifier: 0.24.0
-        version: 0.24.0
+        specifier: 0.24.1
+        version: 0.24.1
       '@syuilo/aiscript':
         specifier: 0.16.0
         version: 0.16.0
@@ -759,6 +759,9 @@ importers:
       json5:
         specifier: 2.2.3
         version: 2.2.3
+      katex:
+        specifier: 0.16.9
+        version: 0.16.9
       matter-js:
         specifier: 0.19.0
         version: 0.19.0
@@ -5853,8 +5856,8 @@ packages:
       string-argv: 0.3.1
     dev: true
 
-  /@sharkey/sfm-js@0.24.0:
-    resolution: {integrity: sha512-OkrStlAj6MK0KHylLCc6I9IE1D9UjaV32bWo731o05Mny2R1JmkdoFTof92XTkJ4CKmvSk2oXlLBAt3jQ4Ghlg==, tarball: https://git.joinsharkey.org/api/packages/Sharkey/npm/%40sharkey%2Fsfm-js/-/0.24.0/sfm-js-0.24.0.tgz}
+  /@sharkey/sfm-js@0.24.1:
+    resolution: {integrity: sha512-STBMI34OEXjS94+/uUk9MtJLoKzF6TqZbS6BZRZ8bo4NEq2rTH330R6Q90xSJI1FY6RIV7kxepIG8cjUumY4kA==, tarball: https://git.joinsharkey.org/api/packages/Sharkey/npm/%40sharkey%2Fsfm-js/-/0.24.1/sfm-js-0.24.1.tgz}
     dependencies:
       '@twemoji/parser': 15.0.0
     dev: false
@@ -10336,6 +10339,11 @@ packages:
     engines: {node: '>= 10'}
     dev: false
 
+  /commander@8.3.0:
+    resolution: {integrity: sha512-OkTL9umf+He2DZkUq8f8J9of7yL6RJKI24dVITBmNfZBmri9zYZQrKkuXiKhyfPSu8tUhnVBB1iKXevvnlR4Ww==}
+    engines: {node: '>= 12'}
+    dev: false
+
   /commander@9.5.0:
     resolution: {integrity: sha512-KRs7WVDKg86PWiuAqhDrAQnTXZKraVcCc6vFdL14qrZ/DcWwuRo7VoiYXalXO7S5GKpqYiVEwCbgFDfxNHKJBQ==}
     engines: {node: ^12.20.0 || >=14}
@@ -14483,6 +14491,13 @@ packages:
       safe-buffer: 5.2.1
     dev: false
 
+  /katex@0.16.9:
+    resolution: {integrity: sha512-fsSYjWS0EEOwvy81j3vRA8TEAhQhKiqO+FQaKWp0m39qwOzHVBgAUBIXWj1pB+O2W3fIpNa6Y9KSKCVbfPhyAQ==}
+    hasBin: true
+    dependencies:
+      commander: 8.3.0
+    dev: false
+
   /keyv@4.5.4:
     resolution: {integrity: sha512-oxVHkHR/EJf2CNXnWxRLW6mg7JyCCUcG0DtEGmL2ctUo1PNTin1PUil+r/+4r5MpVgC/fn1kjsx7mjSujKqIpw==}
     dependencies: