diff --git a/404.html b/404.html
index 7881a0c..4e62374 100644
--- a/404.html
+++ b/404.html
@@ -30,7 +30,7 @@
   
     
   
-  <meta name="description" content="Lead AI Engieer" />
+  <meta name="description" content="Principal AI Engieer" />
 
   
   <link rel="alternate" hreflang="en-us" href="https://shinichi-takayanagi.github.io/404.html" />
@@ -298,7 +298,7 @@
   <meta property="og:site_name" content="Shinichi Takayanagi" />
   <meta property="og:url" content="https://shinichi-takayanagi.github.io/404.html" />
   <meta property="og:title" content="404 Page not found | Shinichi Takayanagi" />
-  <meta property="og:description" content="Lead AI Engieer" /><meta property="og:image" content="https://shinichi-takayanagi.github.io/media/icon_hua2ec155b4296a9c9791d015323e16eb5_11927_512x512_fill_lanczos_center_3.png" />
+  <meta property="og:description" content="Principal AI Engieer" /><meta property="og:image" content="https://shinichi-takayanagi.github.io/media/icon_hua2ec155b4296a9c9791d015323e16eb5_11927_512x512_fill_lanczos_center_3.png" />
     <meta property="twitter:image" content="https://shinichi-takayanagi.github.io/media/icon_hua2ec155b4296a9c9791d015323e16eb5_11927_512x512_fill_lanczos_center_3.png" /><meta property="og:locale" content="en-us" />
   
     
diff --git a/author/shinichi-takayanagi-ph.d./index.html b/author/shinichi-takayanagi-ph.d./index.html
index c96aa8d..d7af4ab 100644
--- a/author/shinichi-takayanagi-ph.d./index.html
+++ b/author/shinichi-takayanagi-ph.d./index.html
@@ -30,7 +30,7 @@
   
     
   
-  <meta name="description" content="Lead AI Engieer" />
+  <meta name="description" content="Principal AI Engieer" />
 
   
   <link rel="alternate" hreflang="en-us" href="https://shinichi-takayanagi.github.io/author/shinichi-takayanagi-ph.d./" />
@@ -301,7 +301,7 @@
   <meta property="og:site_name" content="Shinichi Takayanagi" />
   <meta property="og:url" content="https://shinichi-takayanagi.github.io/author/shinichi-takayanagi-ph.d./" />
   <meta property="og:title" content="Shinichi Takayanagi, Ph.D. | Shinichi Takayanagi" />
-  <meta property="og:description" content="Lead AI Engieer" /><meta property="og:image" content="https://shinichi-takayanagi.github.io/author/shinichi-takayanagi-ph.d./avatar_hu3c7d038688e8f21216624bb3cb1204ff_2648339_270x270_fill_lanczos_center_3.png" />
+  <meta property="og:description" content="Principal AI Engieer" /><meta property="og:image" content="https://shinichi-takayanagi.github.io/author/shinichi-takayanagi-ph.d./avatar_hu3c7d038688e8f21216624bb3cb1204ff_2648339_270x270_fill_lanczos_center_3.png" />
     <meta property="twitter:image" content="https://shinichi-takayanagi.github.io/author/shinichi-takayanagi-ph.d./avatar_hu3c7d038688e8f21216624bb3cb1204ff_2648339_270x270_fill_lanczos_center_3.png" /><meta property="og:locale" content="en-us" />
   
     
@@ -654,7 +654,7 @@ <h1>Search</h1>
 
       <div class="portrait-title">
         <h2>Shinichi Takayanagi, Ph.D.</h2>
-        <h3>Lead AI Engieer</h3>
+        <h3>Principal AI Engieer</h3>
 
         
       </div>
diff --git a/authors/index.html b/authors/index.html
index 6e372f3..726f904 100644
--- a/authors/index.html
+++ b/authors/index.html
@@ -30,7 +30,7 @@
   
     
   
-  <meta name="description" content="Lead AI Engieer" />
+  <meta name="description" content="Principal AI Engieer" />
 
   
   <link rel="alternate" hreflang="en-us" href="https://shinichi-takayanagi.github.io/authors/" />
@@ -300,7 +300,7 @@
   <meta property="og:site_name" content="Shinichi Takayanagi" />
   <meta property="og:url" content="https://shinichi-takayanagi.github.io/authors/" />
   <meta property="og:title" content="Authors | Shinichi Takayanagi" />
-  <meta property="og:description" content="Lead AI Engieer" /><meta property="og:image" content="https://shinichi-takayanagi.github.io/media/icon_hua2ec155b4296a9c9791d015323e16eb5_11927_512x512_fill_lanczos_center_3.png" />
+  <meta property="og:description" content="Principal AI Engieer" /><meta property="og:image" content="https://shinichi-takayanagi.github.io/media/icon_hua2ec155b4296a9c9791d015323e16eb5_11927_512x512_fill_lanczos_center_3.png" />
     <meta property="twitter:image" content="https://shinichi-takayanagi.github.io/media/icon_hua2ec155b4296a9c9791d015323e16eb5_11927_512x512_fill_lanczos_center_3.png" /><meta property="og:locale" content="en-us" />
   
     
diff --git a/categories/index.html b/categories/index.html
index ec60c97..476a110 100644
--- a/categories/index.html
+++ b/categories/index.html
@@ -30,7 +30,7 @@
   
     
   
-  <meta name="description" content="Lead AI Engieer" />
+  <meta name="description" content="Principal AI Engieer" />
 
   
   <link rel="alternate" hreflang="en-us" href="https://shinichi-takayanagi.github.io/categories/" />
@@ -300,7 +300,7 @@
   <meta property="og:site_name" content="Shinichi Takayanagi" />
   <meta property="og:url" content="https://shinichi-takayanagi.github.io/categories/" />
   <meta property="og:title" content="Categories | Shinichi Takayanagi" />
-  <meta property="og:description" content="Lead AI Engieer" /><meta property="og:image" content="https://shinichi-takayanagi.github.io/media/icon_hua2ec155b4296a9c9791d015323e16eb5_11927_512x512_fill_lanczos_center_3.png" />
+  <meta property="og:description" content="Principal AI Engieer" /><meta property="og:image" content="https://shinichi-takayanagi.github.io/media/icon_hua2ec155b4296a9c9791d015323e16eb5_11927_512x512_fill_lanczos_center_3.png" />
     <meta property="twitter:image" content="https://shinichi-takayanagi.github.io/media/icon_hua2ec155b4296a9c9791d015323e16eb5_11927_512x512_fill_lanczos_center_3.png" /><meta property="og:locale" content="en-us" />
   
     
diff --git a/index.html b/index.html
index 40894ee..4921af0 100644
--- a/index.html
+++ b/index.html
@@ -30,7 +30,7 @@
   
     
   
-  <meta name="description" content="Lead AI Engieer" />
+  <meta name="description" content="Principal AI Engieer" />
 
   
   <link rel="alternate" hreflang="en-us" href="https://shinichi-takayanagi.github.io/" />
@@ -308,7 +308,7 @@
   <meta property="og:site_name" content="Shinichi Takayanagi" />
   <meta property="og:url" content="https://shinichi-takayanagi.github.io/" />
   <meta property="og:title" content="Shinichi Takayanagi" />
-  <meta property="og:description" content="Lead AI Engieer" /><meta property="og:image" content="https://shinichi-takayanagi.github.io/media/icon_hua2ec155b4296a9c9791d015323e16eb5_11927_512x512_fill_lanczos_center_3.png" />
+  <meta property="og:description" content="Principal AI Engieer" /><meta property="og:image" content="https://shinichi-takayanagi.github.io/media/icon_hua2ec155b4296a9c9791d015323e16eb5_11927_512x512_fill_lanczos_center_3.png" />
     <meta property="twitter:image" content="https://shinichi-takayanagi.github.io/media/icon_hua2ec155b4296a9c9791d015323e16eb5_11927_512x512_fill_lanczos_center_3.png" /><meta property="og:locale" content="en-us" />
   
     
@@ -746,7 +746,7 @@ <h1>Search</h1>
 
       <div class="portrait-title">
         <h2>Shinichi Takayanagi, Ph.D.</h2>
-        <h3>Lead AI Engieer</h3>
+        <h3>Principal AI Engieer</h3>
 
         
       </div>
diff --git a/publication_types/index.html b/publication_types/index.html
index 4814611..7b0c8e0 100644
--- a/publication_types/index.html
+++ b/publication_types/index.html
@@ -30,7 +30,7 @@
   
     
   
-  <meta name="description" content="Lead AI Engieer" />
+  <meta name="description" content="Principal AI Engieer" />
 
   
   <link rel="alternate" hreflang="en-us" href="https://shinichi-takayanagi.github.io/publication_types/" />
@@ -300,7 +300,7 @@
   <meta property="og:site_name" content="Shinichi Takayanagi" />
   <meta property="og:url" content="https://shinichi-takayanagi.github.io/publication_types/" />
   <meta property="og:title" content="Publication_types | Shinichi Takayanagi" />
-  <meta property="og:description" content="Lead AI Engieer" /><meta property="og:image" content="https://shinichi-takayanagi.github.io/media/icon_hua2ec155b4296a9c9791d015323e16eb5_11927_512x512_fill_lanczos_center_3.png" />
+  <meta property="og:description" content="Principal AI Engieer" /><meta property="og:image" content="https://shinichi-takayanagi.github.io/media/icon_hua2ec155b4296a9c9791d015323e16eb5_11927_512x512_fill_lanczos_center_3.png" />
     <meta property="twitter:image" content="https://shinichi-takayanagi.github.io/media/icon_hua2ec155b4296a9c9791d015323e16eb5_11927_512x512_fill_lanczos_center_3.png" /><meta property="og:locale" content="en-us" />
   
     
diff --git a/tags/index.html b/tags/index.html
index 44a23f5..94371ac 100644
--- a/tags/index.html
+++ b/tags/index.html
@@ -30,7 +30,7 @@
   
     
   
-  <meta name="description" content="Lead AI Engieer" />
+  <meta name="description" content="Principal AI Engieer" />
 
   
   <link rel="alternate" hreflang="en-us" href="https://shinichi-takayanagi.github.io/tags/" />
@@ -300,7 +300,7 @@
   <meta property="og:site_name" content="Shinichi Takayanagi" />
   <meta property="og:url" content="https://shinichi-takayanagi.github.io/tags/" />
   <meta property="og:title" content="Tags | Shinichi Takayanagi" />
-  <meta property="og:description" content="Lead AI Engieer" /><meta property="og:image" content="https://shinichi-takayanagi.github.io/media/icon_hua2ec155b4296a9c9791d015323e16eb5_11927_512x512_fill_lanczos_center_3.png" />
+  <meta property="og:description" content="Principal AI Engieer" /><meta property="og:image" content="https://shinichi-takayanagi.github.io/media/icon_hua2ec155b4296a9c9791d015323e16eb5_11927_512x512_fill_lanczos_center_3.png" />
     <meta property="twitter:image" content="https://shinichi-takayanagi.github.io/media/icon_hua2ec155b4296a9c9791d015323e16eb5_11927_512x512_fill_lanczos_center_3.png" /><meta property="og:locale" content="en-us" />