diff --git a/resources/js/pages/BoardIndex.jsx b/resources/js/pages/BoardIndex.jsx
index a171a85..8497ef9 100644
--- a/resources/js/pages/BoardIndex.jsx
+++ b/resources/js/pages/BoardIndex.jsx
@@ -96,7 +96,48 @@ export default function BoardIndex() {
             nodes.forEach((node) => sortNodes(node.children))
         }
 
+        const aggregateNodes = (node) => {
+            if (!node.children?.length) {
+                return {
+                    threads: node.threads_count ?? 0,
+                    views: node.views_count ?? 0,
+                    posts: node.posts_count ?? 0,
+                    last: node.last_post_at ? { at: node.last_post_at, node } : null,
+                }
+            }
+
+            let threads = node.threads_count ?? 0
+            let views = node.views_count ?? 0
+            let posts = node.posts_count ?? 0
+            let last = node.last_post_at ? { at: node.last_post_at, node } : null
+
+            node.children.forEach((child) => {
+                const agg = aggregateNodes(child)
+                threads += agg.threads
+                views += agg.views
+                posts += agg.posts
+                if (agg.last && (!last || agg.last.at > last.at)) {
+                    last = agg.last
+                }
+            })
+
+            node.threads_count = threads
+            node.views_count = views
+            node.posts_count = posts
+            if (last) {
+                const source = last.node
+                node.last_post_at = source.last_post_at
+                node.last_post_user_id = source.last_post_user_id
+                node.last_post_user_name = source.last_post_user_name
+                node.last_post_user_rank_color = source.last_post_user_rank_color
+                node.last_post_user_group_color = source.last_post_user_group_color
+            }
+
+            return { threads, views, posts, last }
+        }
+
         sortNodes(roots)
+        roots.forEach((root) => aggregateNodes(root))
 
         return roots
     }, [forums])
diff --git a/resources/js/pages/ForumView.jsx b/resources/js/pages/ForumView.jsx
index ce9e15c..c6ff2bf 100644
--- a/resources/js/pages/ForumView.jsx
+++ b/resources/js/pages/ForumView.jsx
@@ -1,7 +1,7 @@
 import { useEffect, useState } from 'react'
 import { Button, Badge, Card, Col, Container, Form, Modal, Row } from 'react-bootstrap'
 import { Link, useParams } from 'react-router-dom'
-import { createThread, getForum, listForumsByParent, listThreadsByForum } from '../api/client'
+import { createThread, getForum, listAllForums, listThreadsByForum } from '../api/client'
 import PortalTopicRow from '../components/PortalTopicRow'
 import { useAuth } from '../context/AuthContext'
 import { useTranslation } from 'react-i18next'
@@ -71,6 +71,77 @@ export default function ForumView() {
             </div>
         ))
 
+    const getParentId = (node) => {
+        if (!node.parent) return null
+        if (typeof node.parent === 'string') {
+            return node.parent.split('/').pop()
+        }
+        return node.parent.id ?? null
+    }
+
+    const buildForumTree = (allForums) => {
+        const map = new Map()
+        const roots = []
+
+        allForums.forEach((item) => {
+            map.set(String(item.id), { ...item, children: [] })
+        })
+
+        allForums.forEach((item) => {
+            const parentId = getParentId(item)
+            const node = map.get(String(item.id))
+            if (parentId && map.has(String(parentId))) {
+                map.get(String(parentId)).children.push(node)
+            } else {
+                roots.push(node)
+            }
+        })
+
+        const aggregateNodes = (node) => {
+            if (!node.children?.length) {
+                return {
+                    threads: node.threads_count ?? 0,
+                    views: node.views_count ?? 0,
+                    posts: node.posts_count ?? 0,
+                    last: node.last_post_at ? { at: node.last_post_at, node } : null,
+                }
+            }
+
+            let threads = node.threads_count ?? 0
+            let views = node.views_count ?? 0
+            let posts = node.posts_count ?? 0
+            let last = node.last_post_at ? { at: node.last_post_at, node } : null
+
+            node.children.forEach((child) => {
+                const agg = aggregateNodes(child)
+                threads += agg.threads
+                views += agg.views
+                posts += agg.posts
+                if (agg.last && (!last || agg.last.at > last.at)) {
+                    last = agg.last
+                }
+            })
+
+            node.threads_count = threads
+            node.views_count = views
+            node.posts_count = posts
+            if (last) {
+                const source = last.node
+                node.last_post_at = source.last_post_at
+                node.last_post_user_id = source.last_post_user_id
+                node.last_post_user_name = source.last_post_user_name
+                node.last_post_user_rank_color = source.last_post_user_rank_color
+                node.last_post_user_group_color = source.last_post_user_group_color
+            }
+
+            return { threads, views, posts, last }
+        }
+
+        roots.forEach((root) => aggregateNodes(root))
+
+        return map
+    }
+
     useEffect(() => {
         let active = true
 
@@ -81,9 +152,11 @@ export default function ForumView() {
                 const forumData = await getForum(id)
                 if (!active) return
                 setForum(forumData)
-                const childData = await listForumsByParent(id)
+                const allForums = await listAllForums()
                 if (!active) return
-                setChildren(childData)
+                const treeMap = buildForumTree(allForums)
+                const currentNode = treeMap.get(String(forumData.id))
+                setChildren(currentNode?.children ?? [])
                 if (forumData.type === 'forum') {
                     const threadData = await listThreadsByForum(id)
                     if (!active) return