diff --git a/client/src/ui/NpcInfoPanel.ts b/client/src/ui/NpcInfoPanel.ts
index d466371..1d98cbf 100644
--- a/client/src/ui/NpcInfoPanel.ts
+++ b/client/src/ui/NpcInfoPanel.ts
@@ -42,6 +42,7 @@ export class NpcInfoPanel {
   private statusContent!: HTMLDivElement;
   private relationshipsContent!: HTMLDivElement;
   private activeTab: 'status' | 'relationships' = 'status';
+  private expandedTiers: Set<string> = new Set();
   private visible = false;
 
   constructor() {
@@ -528,8 +529,9 @@ export class NpcInfoPanel {
       }
 
       if (hidden.length > 0) {
+        const isExpanded = this.expandedTiers.has(tier);
         const overflow = document.createElement('div');
-        overflow.style.cssText = 'display: none;';
+        overflow.style.cssText = isExpanded ? '' : 'display: none;';
         for (const rel of hidden) {
           overflow.appendChild(this.createRelSlider(rel.name, rel.value, tier));
         }
@@ -544,11 +546,18 @@ export class NpcInfoPanel {
           padding: 2px 0;
           text-align: center;
         `;
-        toggle.textContent = `\u25BC ${hidden.length} more...`;
+        toggle.textContent = isExpanded
+          ? '\u25B2 show less'
+          : `\u25BC ${hidden.length} more...`;
         toggle.addEventListener('click', () => {
-          const expanded = overflow.style.display !== 'none';
-          overflow.style.display = expanded ? 'none' : '';
-          toggle.textContent = expanded
+          const wasExpanded = this.expandedTiers.has(tier);
+          if (wasExpanded) {
+            this.expandedTiers.delete(tier);
+          } else {
+            this.expandedTiers.add(tier);
+          }
+          overflow.style.display = wasExpanded ? 'none' : '';
+          toggle.textContent = wasExpanded
             ? `\u25BC ${hidden.length} more...`
             : '\u25B2 show less';
         });
@@ -574,8 +583,10 @@ export class NpcInfoPanel {
       }
 
       if (memHidden.length > 0) {
+        const memKey = '__memories__';
+        const isExpanded = this.expandedTiers.has(memKey);
         const overflow = document.createElement('div');
-        overflow.style.cssText = 'display: none;';
+        overflow.style.cssText = isExpanded ? '' : 'display: none;';
         for (const rel of memHidden) {
           overflow.appendChild(this.createRelSlider(rel.name + ' \u2020', rel.value, 'memory'));
         }
@@ -590,11 +601,18 @@ export class NpcInfoPanel {
           padding: 2px 0;
           text-align: center;
         `;
-        toggle.textContent = `\u25BC ${memHidden.length} more...`;
+        toggle.textContent = isExpanded
+          ? '\u25B2 show less'
+          : `\u25BC ${memHidden.length} more...`;
         toggle.addEventListener('click', () => {
-          const expanded = overflow.style.display !== 'none';
-          overflow.style.display = expanded ? 'none' : '';
-          toggle.textContent = expanded
+          const wasExpanded = this.expandedTiers.has(memKey);
+          if (wasExpanded) {
+            this.expandedTiers.delete(memKey);
+          } else {
+            this.expandedTiers.add(memKey);
+          }
+          overflow.style.display = wasExpanded ? 'none' : '';
+          toggle.textContent = wasExpanded
             ? `\u25BC ${memHidden.length} more...`
             : '\u25B2 show less';
         });