diff --git a/CHANGELOG.md b/CHANGELOG.md
index 72cd8fef4b..897a909a04 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -23,6 +23,7 @@
 - Feat: 音声・映像プレイヤーを追加
 - Feat: 絵文字の詳細ダイアログを追加
 - Feat: 枠線をつけるMFM`$[border.width=1,style=solid,color=fff,radius=0 ...]`を追加
+  - デフォルトで枠線からはみ出る部分が隠されるようにしました。初期と同じ挙動にするには`$[border.noclip`が必要です
 - Enhance: ハッシュタグ入力時に、本文の末尾の行に何も書かれていない場合は新たにスペースを追加しないように
 - Enhance: チャンネルノートのピン留めをノートのメニューからできるように
 - Enhance: 管理者の場合はAPI tokenの発行画面で管理機能に関する権限を付与できるように
@@ -30,6 +31,7 @@
   - 配列の範囲外・非整数のインデックスへの代入が完全禁止になるので注意
 - Enhance: 絵文字ピッカー・オートコンプリートで、完全一致した絵文字を優先的に表示するように
 - Enhance: Playの説明欄にMFMを使えるように
+- Enhance: チャンネルノートの場合は詳細ページからその前後のノートを見れるように
 - Fix: ネイティブモードの絵文字がモノクロにならないように
 - Fix: v2023.12.0で追加された「モデレーターがユーザーのアイコンもしくはバナー画像を未設定状態にできる機能」が管理画面上で正しく表示されていない問題を修正
 - Fix: AiScriptの`readline`関数が不正な値を返すことがある問題のv2023.12.0時点での修正がPlay以外に適用されていないのを修正
@@ -46,6 +48,7 @@
 - Fix: `notes/create`で、`text`が空白文字のみで構成されているか`null`であって、かつ`text`だけであるリクエストに対するレスポンスが400になるように変更
 - Fix: `notes/create`で、`text`が空白文字のみで構成されていてかつリノート、ファイルまたは投票を含んでいるリクエストに対するレスポンスの`text`が`""`から`null`になるように変更
 - Fix: ipv4とipv6の両方が利用可能な環境でallowedPrivateNetworksが設定されていた場合プライベートipの検証ができていなかった問題を修正
+- Fix: properly handle cc followers
 
 ## 2023.12.2
 
diff --git a/packages/backend/src/core/activitypub/ApAudienceService.ts b/packages/backend/src/core/activitypub/ApAudienceService.ts
index 440852bdf3..11fc82e8bc 100644
--- a/packages/backend/src/core/activitypub/ApAudienceService.ts
+++ b/packages/backend/src/core/activitypub/ApAudienceService.ts
@@ -58,7 +58,7 @@ export class ApAudienceService {
 			};
 		}
 
-		if (toGroups.followers.length > 0) {
+		if (toGroups.followers.length > 0 || ccGroups.followers.length > 0) {
 			return {
 				visibility: 'followers',
 				mentionedUsers,
diff --git a/packages/backend/src/server/api/endpoints/bubble-game/register.ts b/packages/backend/src/server/api/endpoints/bubble-game/register.ts
index f092d16a70..8eb90fdbf9 100644
--- a/packages/backend/src/server/api/endpoints/bubble-game/register.ts
+++ b/packages/backend/src/server/api/endpoints/bubble-game/register.ts
@@ -63,8 +63,8 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 				throw new ApiError(meta.errors.invalidSeed);
 			}
 
-			// シードが古すぎる(1時間以上前)のも弾く
-			if (seedDate.getTime() < now.getTime() - 1000 * 60 * 60) {
+			// シードが古すぎる(5時間以上前)のも弾く
+			if (seedDate.getTime() < now.getTime() - 1000 * 60 * 60 * 5) {
 				throw new ApiError(meta.errors.invalidSeed);
 			}
 
diff --git a/packages/frontend/src/components/global/MkMisskeyFlavoredMarkdown.ts b/packages/frontend/src/components/global/MkMisskeyFlavoredMarkdown.ts
index f55069200d..b7190f6335 100644
--- a/packages/frontend/src/components/global/MkMisskeyFlavoredMarkdown.ts
+++ b/packages/frontend/src/components/global/MkMisskeyFlavoredMarkdown.ts
@@ -266,7 +266,7 @@ export default function(props: MfmProps, context: SetupContext<MfmEvents>) {
 						) b_style = 'solid';
 						const width = parseFloat(token.props.args.width ?? '1');
 						const radius = parseFloat(token.props.args.radius ?? '0');
-						style = `border: ${width}px ${b_style} ${color}; border-radius: ${radius}px`;
+						style = `border: ${width}px ${b_style} ${color}; border-radius: ${radius}px;${token.props.args.noclip ? '' : ' overflow: clip;'}`;
 						break;
 					}
 					case 'ruby': {
diff --git a/packages/frontend/src/pages/drop-and-fusion.game.vue b/packages/frontend/src/pages/drop-and-fusion.game.vue
index a8fa953c38..1fc0c7cd9c 100644
--- a/packages/frontend/src/pages/drop-and-fusion.game.vue
+++ b/packages/frontend/src/pages/drop-and-fusion.game.vue
@@ -496,7 +496,7 @@ const SWEETS_MONOS: FrontendMonoDefinition[] = [{
 }];
 
 const props = defineProps<{
-	gameMode: 'normal' | 'square' | 'yen' | 'sweets';
+	gameMode: 'normal' | 'square' | 'yen' | 'sweets' | 'space';
 	mute: boolean;
 }>();
 
@@ -509,6 +509,7 @@ const monoDefinitions = computed(() => {
 		props.gameMode === 'square' ? SQUARE_MONOS :
 		props.gameMode === 'yen' ? YEN_MONOS :
 		props.gameMode === 'sweets' ? SWEETS_MONOS :
+		props.gameMode === 'space' ? NORAML_MONOS :
 		[] as never;
 });
 
diff --git a/packages/frontend/src/pages/drop-and-fusion.vue b/packages/frontend/src/pages/drop-and-fusion.vue
index 18d3f56ca2..dd3b189c9d 100644
--- a/packages/frontend/src/pages/drop-and-fusion.vue
+++ b/packages/frontend/src/pages/drop-and-fusion.vue
@@ -28,6 +28,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 								<option value="square">SQUARE</option>
 								<option value="yen">YEN</option>
 								<option value="sweets">SWEETS</option>
+								<!--<option value="space">SPACE</option>-->
 							</MkSelect>
 							<MkButton primary gradate large rounded inline @click="start">{{ i18n.ts.start }}</MkButton>
 						</div>
@@ -94,7 +95,7 @@ import MkSelect from '@/components/MkSelect.vue';
 import MkSwitch from '@/components/MkSwitch.vue';
 import { misskeyApiGet } from '@/scripts/misskey-api.js';
 
-const gameMode = ref<'normal' | 'square' | 'yen' | 'sweets'>('normal');
+const gameMode = ref<'normal' | 'square' | 'yen' | 'sweets' | 'space'>('normal');
 const gameStarted = ref(false);
 const mute = ref(false);
 const ranking = ref(null);
@@ -108,6 +109,7 @@ function getScoreUnit(gameMode: string) {
 		gameMode === 'square' ? 'pt' :
 		gameMode === 'yen' ? '円' :
 		gameMode === 'sweets' ? 'kcal' :
+		gameMode === 'space' ? 'pt' :
 		'' as never;
 }
 
diff --git a/packages/frontend/src/pages/note.vue b/packages/frontend/src/pages/note.vue
index 7e353e629c..4c0e9bbb98 100644
--- a/packages/frontend/src/pages/note.vue
+++ b/packages/frontend/src/pages/note.vue
@@ -11,11 +11,14 @@ SPDX-License-Identifier: AGPL-3.0-only
 			<Transition :name="defaultStore.state.animation ? 'fade' : ''" mode="out-in">
 				<div v-if="note">
 					<div v-if="showNext" class="_margin">
-						<MkNotes class="" :pagination="nextPagination" :noGap="true" :disableAutoLoad="true"/>
+						<MkNotes class="" :pagination="showNext === 'channel' ? nextChannelPagination : nextUserPagination" :noGap="true" :disableAutoLoad="true"/>
 					</div>
 
 					<div class="_margin">
-						<MkButton v-if="!showNext" :class="$style.loadNext" @click="showNext = true"><i class="ti ti-chevron-up"></i></MkButton>
+						<div v-if="!showNext" class="_buttons" :class="$style.loadNext">
+							<MkButton v-if="note.channelId" rounded :class="$style.loadButton" @click="showNext = 'channel'"><i class="ti ti-chevron-up"></i> <i class="ti ti-device-tv"></i></MkButton>
+							<MkButton rounded :class="$style.loadButton" @click="showNext = 'user'"><i class="ti ti-chevron-up"></i> <i class="ti ti-user"></i></MkButton>
+						</div>
 						<div class="_margin _gaps_s">
 							<MkRemoteCaution v-if="note.user.host != null" :href="note.url ?? note.uri"/>
 							<MkNoteDetailed :key="note.id" v-model:note="note" :class="$style.note"/>
@@ -28,11 +31,14 @@ SPDX-License-Identifier: AGPL-3.0-only
 								</MkA>
 							</div>
 						</div>
-						<MkButton v-if="!showPrev" :class="$style.loadPrev" @click="showPrev = true"><i class="ti ti-chevron-down"></i></MkButton>
+						<div v-if="!showPrev" class="_buttons" :class="$style.loadPrev">
+							<MkButton v-if="note.channelId" rounded :class="$style.loadButton" @click="showPrev = 'channel'"><i class="ti ti-chevron-down"></i> <i class="ti ti-device-tv"></i></MkButton>
+							<MkButton rounded :class="$style.loadButton" @click="showPrev = 'user'"><i class="ti ti-chevron-down"></i> <i class="ti ti-user"></i></MkButton>
+						</div>
 					</div>
 
 					<div v-if="showPrev" class="_margin">
-						<MkNotes class="" :pagination="prevPagination" :noGap="true"/>
+						<MkNotes class="" :pagination="showPrev === 'channel' ? prevChannelPagination : prevUserPagination" :noGap="true"/>
 					</div>
 				</div>
 				<MkError v-else-if="error" @retry="fetchNote()"/>
@@ -46,6 +52,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 <script lang="ts" setup>
 import { computed, watch, ref } from 'vue';
 import * as Misskey from 'misskey-js';
+import type { Paging } from '@/components/MkPagination.vue';
 import MkNoteDetailed from '@/components/MkNoteDetailed.vue';
 import MkNotes from '@/components/MkNotes.vue';
 import MkRemoteCaution from '@/components/MkRemoteCaution.vue';
@@ -63,27 +70,46 @@ const props = defineProps<{
 
 const note = ref<null | Misskey.entities.Note>();
 const clips = ref<Misskey.entities.Clip[]>();
-const showPrev = ref(false);
-const showNext = ref(false);
+const showPrev = ref<'user' | 'channel' | false>(false);
+const showNext = ref<'user' | 'channel' | false>(false);
 const error = ref();
 
-const prevPagination = {
-	endpoint: 'users/notes' as const,
+const prevUserPagination: Paging = {
+	endpoint: 'users/notes',
 	limit: 10,
 	params: computed(() => note.value ? ({
 		userId: note.value.userId,
 		untilId: note.value.id,
-	}) : null),
+	}) : undefined),
 };
 
-const nextPagination = {
+const nextUserPagination: Paging = {
 	reversed: true,
-	endpoint: 'users/notes' as const,
+	endpoint: 'users/notes',
 	limit: 10,
 	params: computed(() => note.value ? ({
 		userId: note.value.userId,
 		sinceId: note.value.id,
-	}) : null),
+	}) : undefined),
+};
+
+const prevChannelPagination: Paging = {
+	endpoint: 'channels/timeline',
+	limit: 10,
+	params: computed(() => note.value ? ({
+		channelId: note.value.channelId,
+		untilId: note.value.id,
+	}) : undefined),
+};
+
+const nextChannelPagination: Paging = {
+	reversed: true,
+	endpoint: 'channels/timeline',
+	limit: 10,
+	params: computed(() => note.value ? ({
+		channelId: note.value.channelId,
+		sinceId: note.value.id,
+	}) : undefined),
 };
 
 function fetchNote() {
@@ -139,9 +165,7 @@ definePageMetadata(computed(() => note.value ? {
 
 .loadNext,
 .loadPrev {
-	min-width: 0;
-	margin: 0 auto;
-	border-radius: 999px;
+	justify-content: center;
 }
 
 .loadNext {
@@ -152,6 +176,10 @@ definePageMetadata(computed(() => note.value ? {
 	margin-top: var(--margin);
 }
 
+.loadButton {
+	min-width: 0;
+}
+
 .note {
 	border-radius: var(--radius);
 	background: var(--panel);
diff --git a/packages/frontend/src/scripts/drop-and-fusion-engine.ts b/packages/frontend/src/scripts/drop-and-fusion-engine.ts
index 7c75822a20..b45aa591d1 100644
--- a/packages/frontend/src/scripts/drop-and-fusion-engine.ts
+++ b/packages/frontend/src/scripts/drop-and-fusion-engine.ts
@@ -31,7 +31,7 @@ type Log = {
 	operation: 'surrender';
 };
 
-const NORMAL_BASE_SIZE = 30;
+const NORMAL_BASE_SIZE = 32;
 const NORAML_MONOS: Mono[] = [{
 	id: '9377076d-c980-4d83-bdaf-175bc58275b7',
 	level: 10,
@@ -114,7 +114,7 @@ const NORAML_MONOS: Mono[] = [{
 	dropCandidate: true,
 }];
 
-const YEN_BASE_SIZE = 30;
+const YEN_BASE_SIZE = 32;
 const YEN_SATSU_BASE_SIZE = 70;
 const YEN_MONOS: Mono[] = [{
 	id: '880f9bd9-802f-4135-a7e1-fd0e0331f726',
@@ -1003,7 +1003,7 @@ export class DropAndFusionGame extends EventEmitter<{
 	private tickCallbackQueue: { frame: number; callback: () => void; }[] = [];
 	private overflowCollider: Matter.Body;
 	private isGameOver = false;
-	private gameMode: 'normal' | 'yen' | 'square' | 'sweets';
+	private gameMode: 'normal' | 'yen' | 'square' | 'sweets' | 'space';
 	private rng: () => number;
 	private logs: Log[] = [];
 
@@ -1031,6 +1031,7 @@ export class DropAndFusionGame extends EventEmitter<{
 			case 'yen': return YEN_MONOS;
 			case 'square': return SQUARE_MONOS;
 			case 'sweets': return SWEETS_MONOS;
+			case 'space': return NORAML_MONOS;
 		}
 	}
 
@@ -1071,13 +1072,15 @@ export class DropAndFusionGame extends EventEmitter<{
 		this.getMonoRenderOptions = env.getMonoRenderOptions ?? null;
 		this.rng = seedrandom(env.seed);
 
+		// sweetsモードは重いため
+		const physicsQualityFactor = this.gameMode === 'sweets' ? 4 : this.PHYSICS_QUALITY_FACTOR;
 		this.engine = Matter.Engine.create({
-			constraintIterations: 2 * this.PHYSICS_QUALITY_FACTOR,
-			positionIterations: 6 * this.PHYSICS_QUALITY_FACTOR,
-			velocityIterations: 4 * this.PHYSICS_QUALITY_FACTOR,
+			constraintIterations: 2 * physicsQualityFactor,
+			positionIterations: 6 * physicsQualityFactor,
+			velocityIterations: 4 * physicsQualityFactor,
 			gravity: {
 				x: 0,
-				y: 1,
+				y: this.gameMode === 'space' ? 0.0125 : 1,
 			},
 			timing: {
 				timeScale: 2,
@@ -1092,7 +1095,7 @@ export class DropAndFusionGame extends EventEmitter<{
 			label: '_wall_',
 			isStatic: true,
 			friction: 0.7,
-			slop: 1.0,
+			slop: this.gameMode === 'space' ? 0.01 : 0.7,
 			render: {
 				strokeStyle: 'transparent',
 				fillStyle: 'transparent',
@@ -1130,13 +1133,12 @@ export class DropAndFusionGame extends EventEmitter<{
 	private createBody(mono: Mono, x: number, y: number) {
 		const options: Matter.IBodyDefinition = {
 			label: mono.id,
-			//density: 0.0005,
-			density: ((mono.sizeX + mono.sizeY) / 2) / 1000,
-			restitution: 0.2,
-			frictionAir: 0.01,
-			friction: 0.7,
-			frictionStatic: 5,
-			slop: 1.0,
+			density: this.gameMode === 'space' ? 0.01 : ((mono.sizeX * mono.sizeY) / 10000),
+			restitution: this.gameMode === 'space' ? 0.5 : 0.2,
+			frictionAir: this.gameMode === 'space' ? 0 : 0.01,
+			friction: this.gameMode === 'space' ? 0.5 : 0.7,
+			frictionStatic: this.gameMode === 'space' ? 0 : 5,
+			slop: this.gameMode === 'space' ? 0.01 : 0.7,
 			//mass: 0,
 			render: this.getMonoRenderOptions ? this.getMonoRenderOptions(mono) : undefined,
 		};
@@ -1327,6 +1329,15 @@ export class DropAndFusionGame extends EventEmitter<{
 			operation: 'drop',
 			x: inputX,
 		});
+
+		// add force
+		if (this.gameMode === 'space') {
+			Matter.Body.applyForce(body, body.position, {
+				x: 0,
+				y: (Math.PI * head.mono.sizeX * head.mono.sizeY) / 65536,
+			});
+		}
+
 		Matter.Composite.add(this.engine.world, body);
 
 		this.fusionReadyBodyIds.push(body.id);