diff --git a/CHANGELOG_CHERRYPICK.md b/CHANGELOG_CHERRYPICK.md
index c71646f053..1bc21ac7e2 100644
--- a/CHANGELOG_CHERRYPICK.md
+++ b/CHANGELOG_CHERRYPICK.md
@@ -9,7 +9,15 @@
 
 이 문서는 CherryPick의 변경 사항만 포함합니다. 전체 변경 사항을 확인하려면, [CHANGELOG.md](CHANGELOG.md) 문서를 참고하십시오.
 
-## 13.5.5-cp-3.1.0 (2023/02/10)
+## 13.x.x-cp-3.x.x (unreleased)
+### Improvements
+- 클라이언트: (friendly) 모바일에서 스크롤 시 각종 요소들의 유동적인 높이 조절을 변경된 헤더 디자인에 대응
+
+### Bugfixes
+
+---
+
+## 13.5.6-cp-3.1.0 (2023/02/10)
 이 버전부터 Misskey v13을 대응합니다.
 
 ### Improvements
diff --git a/packages/frontend/src/components/MkFoldableSection.vue b/packages/frontend/src/components/MkFoldableSection.vue
index 475e01c8d4..658ed76640 100644
--- a/packages/frontend/src/components/MkFoldableSection.vue
+++ b/packages/frontend/src/components/MkFoldableSection.vue
@@ -1,6 +1,6 @@
 <template>
 <div class="ssazuxis">
-	<header class="_button" :style="{ background: bg }" @click="showBody = !showBody">
+	<header :class="{ reduceAnimation: !defaultStore.state.animation, showEl: showEl && isMobile && mainRouter().currentRoute.value.name === 'explore' }" class="_button" :style="{ background: bg }" @click="showBody = !showBody">
 		<div class="title"><div><slot name="header"></slot></div></div>
 		<div class="divider"></div>
 		<button class="_button">
@@ -26,7 +26,11 @@
 import { defineComponent } from 'vue';
 import tinycolor from 'tinycolor2';
 import { miLocalStorage } from '@/local-storage';
+import { mainRouter } from '@/router';
 import { defaultStore } from '@/store';
+import { eventBus } from '@/scripts/cherrypick/eventBus';
+
+const MOBILE_THRESHOLD = 500;
 
 const miLocalStoragePrefix = 'ui:folder:' as const;
 
@@ -48,6 +52,10 @@ export default defineComponent({
 			defaultStore,
 			bg: null,
 			showBody: (this.persistKey && miLocalStorage.getItem(`${miLocalStoragePrefix}${this.persistKey}`)) ? (miLocalStorage.getItem(`${miLocalStoragePrefix}${this.persistKey}`) === 't') : this.expanded,
+			showEl: false,
+			isMobile: window.innerWidth <= MOBILE_THRESHOLD,
+			isFriendly: miLocalStorage.getItem('ui') === 'friendly',
+			isAllowHideHeader: mainRouter.currentRoute.value.name === 'index' || mainRouter.currentRoute.value.name === 'explore' || mainRouter.currentRoute.value.name === 'my-notifications' || mainRouter.currentRoute.value.name === 'my-favorites',
 		};
 	},
 	watch: {
@@ -71,8 +79,15 @@ export default defineComponent({
 		const bg = tinycolor(rawBg.startsWith('var(') ? getComputedStyle(document.documentElement).getPropertyValue(rawBg.slice(4, -1)) : rawBg);
 		bg.setAlpha(0.85);
 		this.bg = bg.toRgbString();
+
+		eventBus.on('showEl', (showEl_receive: boolean) => {
+			this.showEl = showEl_receive;
+		});
 	},
 	methods: {
+		mainRouter() {
+			return mainRouter
+		},
 		toggleContent(show: boolean) {
 			this.showBody = show;
 		},
@@ -122,6 +137,7 @@ export default defineComponent({
 		top: var(--stickyTop, 0px);
 		-webkit-backdrop-filter: var(--blur, blur(8px));
 		backdrop-filter: var(--blur, blur(20px));
+		transition: opacity 0.5s, transform 0.5s;
 
 		> .title {
 			display: grid;
@@ -137,6 +153,14 @@ export default defineComponent({
 			background: var(--divider);
 		}
 
+		&.reduceAnimation {
+			transition: opacity 0s, transform 0s;
+		}
+
+		&.showEl {
+			transform: translateY(-50.55px);
+		}
+
 		> button {
 			padding: 12px 0 12px 16px;
 		}
diff --git a/packages/frontend/src/components/MkNote.vue b/packages/frontend/src/components/MkNote.vue
index 05bf0b6cfc..ba7b72438e 100644
--- a/packages/frontend/src/components/MkNote.vue
+++ b/packages/frontend/src/components/MkNote.vue
@@ -42,7 +42,7 @@
 	</div>
 	<article v-else :class="$style.article" @contextmenu.stop="onContextmenu">
 		<div v-if="appearNote.channel" :class="$style.colorBar" :style="{ background: appearNote.channel.color }"></div>
-		<MkAvatar :class="[$style.avatar, {[$style.showEl]: showEl}]" :user="appearNote.user" link preview/>
+		<MkAvatar :class="[$style.avatar, { [$style.showEl]: showEl && mainRouter.currentRoute.value.name === 'index', [$style.showElTab]: showEl && mainRouter.currentRoute.value.name !== 'index' }]" :user="appearNote.user" link preview/>
 		<div :class="$style.main">
 			<MkNoteHeader :class="$style.header" :note="appearNote" :mini="true"/>
 			<MkInstanceTicker v-if="showTicker" :class="$style.ticker" :instance="appearNote.user.instance"/>
@@ -167,6 +167,7 @@ import { MenuItem } from '@/types/menu';
 import MkRippleEffect from '@/components/MkRippleEffect.vue';
 import { showMovedDialog } from '@/scripts/show-moved-dialog';
 import { eventBus } from '@/scripts/cherrypick/eventBus';
+import { mainRouter } from '@/router';
 
 let showEl = $ref(false);
 
@@ -854,6 +855,10 @@ function showReactions(): void {
 		&.showEl {
 			top: 14px;
 		}
+
+		&.showElTab {
+			top: 54px;
+		}
 	}
 }
 
diff --git a/packages/frontend/src/components/global/MkPageHeader.vue b/packages/frontend/src/components/global/MkPageHeader.vue
index 04713efab3..1636b38e01 100644
--- a/packages/frontend/src/components/global/MkPageHeader.vue
+++ b/packages/frontend/src/components/global/MkPageHeader.vue
@@ -1,6 +1,6 @@
 <template>
 <div v-if="show" ref="el" :class="[$style.root]" :style="{ background: bg }">
-	<div :class="[$style.upper, { [$style.slim]: narrow, [$style.thin]: thin_, [$style.reduceAnimation]: !defaultStore.state.animation, [$style.showEl]: showEl && isMobile && isAllowHideHeader }]">
+	<div :class="[$style.upper, { [$style.slim]: narrow, [$style.thin]: thin_ }]">
 		<div v-if="!thin_ && narrow && props.displayMyAvatar && $i && !isFriendly" class="_button" :class="$style.buttonsLeft" @click="openAccountMenu">
 			<MkAvatar :class="$style.avatar" :user="$i"/>
 		</div>
@@ -45,12 +45,9 @@ import { injectPageMetadata } from '@/scripts/page-metadata';
 import { $i, openAccountMenu as openAccountMenu_ } from '@/account';
 import { miLocalStorage } from '@/local-storage';
 import { deviceKind } from '@/scripts/device-kind';
-import { mainRouter } from '@/router';
-import { defaultStore } from '@/store';
 import { eventBus } from '@/scripts/cherrypick/eventBus';
 
 const isFriendly = ref(miLocalStorage.getItem('ui') === 'friendly');
-const isAllowHideHeader = ref(mainRouter.currentRoute.value.name === 'index' || mainRouter.currentRoute.value.name === 'explore' || mainRouter.currentRoute.value.name === 'my-notifications' || mainRouter.currentRoute.value.name === 'my-favorites');
 
 const MOBILE_THRESHOLD = 500;
 
@@ -59,9 +56,6 @@ window.addEventListener('resize', () => {
 	isMobile.value = deviceKind === 'smartphone' || window.innerWidth <= MOBILE_THRESHOLD;
 });
 
-let showEl = $ref(false);
-let lastScrollPosition = $ref(0);
-
 const props = withDefaults(defineProps<{
 	tabs?: Tab[];
 	tab?: string;
@@ -138,10 +132,6 @@ onMounted(() => {
 		});
 		ro.observe(el.parentElement as HTMLElement);
 	}
-
-	eventBus.on('showEl', (showEl_receive) => {
-		showEl = showEl_receive;
-	});
 });
 
 onUnmounted(() => {
@@ -156,6 +146,11 @@ onUnmounted(() => {
 	backdrop-filter: var(--blur, blur(15px));
 	border-bottom: solid 0.5px var(--divider);
 	width: 100%;
+	transition: opacity 0.5s, transform 0.5s;
+
+	&.reduceAnimation {
+		transition: opacity 0s, transform 0s;
+	}
 }
 
 .upper,
@@ -169,7 +164,6 @@ onUnmounted(() => {
 	display: flex;
 	gap: var(--margin);
 	height: var(--height);
-	transition: opacity 0.5s, transform 0.5s;
 
 	.tabs:first-child {
 		margin-left: auto;
@@ -201,14 +195,6 @@ onUnmounted(() => {
 			max-width: 100%;
 		}
 	}
-
-	&.reduceAnimation {
-		transition: opacity 0s, transform 0s;
-	}
-
-	&.showEl {
-		transform: translateY(-50.55px);
-	}
 }
 
 .lower {
diff --git a/packages/frontend/src/components/global/MkStickyContainer.vue b/packages/frontend/src/components/global/MkStickyContainer.vue
index 44c02088da..11fbdf9dc2 100644
--- a/packages/frontend/src/components/global/MkStickyContainer.vue
+++ b/packages/frontend/src/components/global/MkStickyContainer.vue
@@ -1,6 +1,6 @@
 <template>
 <div ref="rootEl">
-	<div ref="headerEl">
+	<div :class="[$style.root, {[$style.reduceAnimation]: !defaultStore.state.animation, [$style.showEl]: showEl && isMobile && isAllowHideHeader && mainRouter.currentRoute.value.name !== 'index', [$style.showElTl]: showEl && isMobile && isAllowHideHeader && mainRouter.currentRoute.value.name === 'index' }]" ref="headerEl">
 		<slot name="header"></slot>
 	</div>
 	<div ref="bodyEl" :data-sticky-container-header-height="headerHeight">
@@ -15,6 +15,23 @@
 <script lang="ts" setup>
 import { onMounted, onUnmounted, provide, inject, Ref, ref, watch } from 'vue';
 import { CURRENT_STICKY_BOTTOM, CURRENT_STICKY_TOP } from '@/const';
+import { miLocalStorage } from '@/local-storage';
+import { deviceKind } from '@/scripts/device-kind';
+import { mainRouter } from '@/router';
+import { defaultStore } from '@/store';
+import { eventBus } from '@/scripts/cherrypick/eventBus';
+
+const isFriendly = ref(miLocalStorage.getItem('ui') === 'friendly');
+const isAllowHideHeader = ref(mainRouter.currentRoute.value.name === 'index' || mainRouter.currentRoute.value.name === 'explore' || mainRouter.currentRoute.value.name === 'my-notifications' || mainRouter.currentRoute.value.name === 'my-favorites');
+
+const MOBILE_THRESHOLD = 500;
+
+const isMobile = ref(deviceKind === 'smartphone' || window.innerWidth <= MOBILE_THRESHOLD);
+window.addEventListener('resize', () => {
+	isMobile.value = deviceKind === 'smartphone' || window.innerWidth <= MOBILE_THRESHOLD;
+});
+
+let showEl = $ref(false);
 
 const rootEl = $shallowRef<HTMLElement>();
 const headerEl = $shallowRef<HTMLElement>();
@@ -78,6 +95,10 @@ onMounted(() => {
 
 	observer.observe(headerEl);
 	observer.observe(footerEl);
+
+	eventBus.on('showEl', (showEl_receive) => {
+		showEl = showEl_receive;
+	});
 });
 
 onUnmounted(() => {
@@ -86,5 +107,19 @@ onUnmounted(() => {
 </script>
 
 <style lang="scss" module>
+.root {
+	transition: opacity 0.5s, transform 0.5s;
 
+	&.reduceAnimation {
+		transition: opacity 0s, transform 0s;
+	}
+
+	&.showEl {
+		transform: translateY(-50.55px);
+	}
+
+	&.showElTl {
+		transform: translateY(-90.55px);
+	}
+}
 </style>
diff --git a/packages/frontend/src/pages/timeline.vue b/packages/frontend/src/pages/timeline.vue
index 87dbc434d8..b268bd80e6 100644
--- a/packages/frontend/src/pages/timeline.vue
+++ b/packages/frontend/src/pages/timeline.vue
@@ -8,7 +8,7 @@
 			:enter-from-class="defaultStore.state.animation ? $style.transition_new_enterFrom : ''"
 			:leave-to-class="defaultStore.state.animation ? $style.transition_new_leaveTo : ''"
 		>
-			<div v-if="queue > 0 && defaultStore.state.newNoteRecivedNotificationBehavior === 'default'" :class="[$style.new, {[$style.reduceAnimation]: !defaultStore.state.animation, [$style.showEl]: showEl && isMobile }]"><button class="_buttonPrimary" @click="top()"><i class="ti ti-arrow-up"></i>{{ i18n.ts.newNoteRecived }}</button></div>
+			<div v-if="queue > 0 && defaultStore.state.newNoteRecivedNotificationBehavior === 'default'" :class="[$style.new, {[$style.reduceAnimation]: !defaultStore.state.animation }]"><button class="_buttonPrimary" @click="top()"><i class="ti ti-arrow-up"></i>{{ i18n.ts.newNoteRecived }}</button></div>
 		</transition>
 		<transition
 			:enter-active-class="defaultStore.state.animation ? $style.transition_new_enterActive : ''"
@@ -16,7 +16,7 @@
 			:enter-from-class="defaultStore.state.animation ? $style.transition_new_enterFrom : ''"
 			:leave-to-class="defaultStore.state.animation ? $style.transition_new_leaveTo : ''"
 		>
-			<div v-if="queue > 0 && defaultStore.state.newNoteRecivedNotificationBehavior === 'count'" :class="[$style.new, {[$style.reduceAnimation]: !defaultStore.state.animation, [$style.showEl]: showEl && isMobile }]"><button class="_buttonPrimary" @click="top()"><i class="ti ti-arrow-up"></i><I18n :src="i18n.ts.newNoteRecivedCount" text-tag="span"><template #n>{{ queue }}</template></I18n></button></div>
+			<div v-if="queue > 0 && defaultStore.state.newNoteRecivedNotificationBehavior === 'count'" :class="[$style.new, {[$style.reduceAnimation]: !defaultStore.state.animation }]"><button class="_buttonPrimary" @click="top()"><i class="ti ti-arrow-up"></i><I18n :src="i18n.ts.newNoteRecivedCount" text-tag="span"><template #n>{{ queue }}</template></I18n></button></div>
 		</transition>
 	</template>
 	<MkSpacer :content-max="800">
@@ -50,9 +50,12 @@ import { instance } from '@/instance';
 import { $i } from '@/account';
 import { definePageMetadata } from '@/scripts/page-metadata';
 import { eventBus } from '@/scripts/cherrypick/eventBus';
+import { miLocalStorage } from '@/local-storage';
 import { deviceKind } from '@/scripts/device-kind';
 
-provide('shouldOmitHeaderTitle', true);
+const isFriendly = ref(miLocalStorage.getItem('ui') === 'friendly');
+
+if (!isFriendly.value) provide('shouldOmitHeaderTitle', true);
 
 const MOBILE_THRESHOLD = 500;
 
@@ -61,8 +64,6 @@ window.addEventListener('resize', () => {
 	isMobile.value = deviceKind === 'smartphone' || window.innerWidth <= MOBILE_THRESHOLD;
 });
 
-let showEl = $ref(false);
-
 const XTutorial = defineAsyncComponent(() => import('./timeline.tutorial.vue'));
 
 const isLocalTimelineAvailable = ($i == null && instance.policies.ltlAvailable) || ($i != null && $i.policies.ltlAvailable);
@@ -206,12 +207,6 @@ definePageMetadata(computed(() => ({
 	title: i18n.ts.timeline,
 	icon: src === 'local' ? 'ti ti-planet' : src === 'social' ? 'ti ti-rocket' : src === 'global' ? 'ti ti-whirl' : 'ti ti-home',
 })));
-
-onMounted(() => {
-	eventBus.on('showEl', (showEl_receive) => {
-		showEl = showEl_receive;
-	});
-});
 </script>
 
 <style lang="scss" module>
@@ -230,7 +225,6 @@ onMounted(() => {
 	z-index: 1000;
 	width: 100%;
 	transition: opacity 0.5s, transform 0.5s;
-	margin: calc(-0.675em - 8px) 0;
 
 	&:first-child {
 		margin-top: calc(-0.675em - 8px - var(--margin));
@@ -240,10 +234,6 @@ onMounted(() => {
 		transition: opacity 0s, transform 0s;
 	}
 
-	&.showEl {
-		transform: translateY(-50px);
-	}
-
 	> button {
 		display: block;
 		margin: var(--margin) auto 0 auto;