diff --git a/10/index.html b/10/index.html
index 0c93605..e4deee4 100644
--- a/10/index.html
+++ b/10/index.html
@@ -19,8 +19,7 @@
     <h2 class="title box-title">navigation</h2>
     <div class="box" style="text-align: center">
       <a class="link" style="float: left" href="../9">prev 󱥐</a>
-      <a class="link" href="../">󱤪 index</a>
-      <a class="link" href="story">story 󱥠</a>
+      <a class="link" href="../">󱤪 index 󱤪</a>
       <a class="link" style="float: right" href="../11">󱤖 next</a>
     </div>
 
@@ -125,8 +124,7 @@
     <h2 class="title box-title">navigation</h2>
     <div class="box" style="text-align: center">
       <a class="link" style="float: left" href="../9">prev 󱥐</a>
-      <a class="link" href="../">󱤪 index</a>
-      <a class="link" href="story">story 󱥠</a>
+      <a class="link" href="../">󱤪 index 󱤪</a>
       <a class="link" style="float: right" href="../11">󱤖 next</a>
     </div>
     <script src="/assets/script.js"></script>
diff --git a/5/index.html b/5/index.html
index 7a18235..c3923fe 100644
--- a/5/index.html
+++ b/5/index.html
@@ -19,8 +19,7 @@
     <h2 class="title box-title">navigation</h2>
     <div class="box" style="text-align: center">
       <a class="link" style="float: left" href="../4">prev 󱥐</a>
-      <a class="link" href="../">󱤪 index</a>
-      <a class="link" href="story">story 󱥠</a>
+      <a class="link" href="../">󱤪 index 󱤪</a>
       <a class="link" style="float: right" href="../6">󱤖 next</a>
     </div>
 
@@ -217,8 +216,7 @@
     <h2 class="title box-title">navigation</h2>
     <div class="box" style="text-align: center">
       <a class="link" style="float: left" href="../4">prev 󱥐</a>
-      <a class="link" href="../">󱤪 index</a>
-      <a class="link" href="story">story 󱥠</a>
+      <a class="link" href="../">󱤪 index 󱤪</a>
       <a class="link" style="float: right" href="../6">󱤖 next</a>
     </div>
     <script src="/assets/script.js"></script>