diff --git a/courseB/Alloy.html b/courseB/Alloy.html
index 283e0fa..48eb946 100644
--- a/courseB/Alloy.html
+++ b/courseB/Alloy.html
@@ -155,7 +155,7 @@
 </p>
 <hr/>
 <br>
-<a href="DTRAM.html">【DTRAM の概要説明】へ</a>
+<a href="SimpleTwitter.html">【ツイートシステム(SimpleTwitter) の仕様説明】へ</a>
 
 </body>
 </html>
\ No newline at end of file
diff --git a/courseB/DTRAM.html b/courseB/DTRAM.html
index a04dde4..f77bf0f 100644
--- a/courseB/DTRAM.html
+++ b/courseB/DTRAM.html
@@ -187,7 +187,7 @@
 </p>
 <hr/>
 <br>
-<a href="InventoryManagement.html">【酒屋の在庫管理システムの仕様説明】へ</a>
+<a href="ST_DTRAM_B.html">【SimpleTwitter(DTRAM)】へ</a>
 
 </body>
 </html>
\ No newline at end of file
diff --git a/courseB/ST_Alloy_B.html b/courseB/ST_Alloy_B.html
index 27fe21f..8758be3 100644
--- a/courseB/ST_Alloy_B.html
+++ b/courseB/ST_Alloy_B.html
@@ -262,7 +262,7 @@
 
 <hr>
 <br>
-<a href="ST_DTRAM_B.html">【SimpleTwitter(DTRAM)】へ</a>
+<a href="DTRAM.html">【DTRAM の概要説明】へ</a>
 </body>
 
 <style>
diff --git a/courseB/ST_DTRAM_B.html b/courseB/ST_DTRAM_B.html
index 5596b9c..37ab117 100644
--- a/courseB/ST_DTRAM_B.html
+++ b/courseB/ST_DTRAM_B.html
@@ -212,7 +212,7 @@
 
 <hr>
 <br>
-<a href="ST_DTRAM_B.html">【IMの説明】へ</a>
+<a href="InventoryManagement.html">【酒屋の在庫管理システムの仕様説明】へ</a>
 </body>
 
 <style>
diff --git a/courseC/Alloy.html b/courseC/Alloy.html
index e0de446..9b4b498 100644
--- a/courseC/Alloy.html
+++ b/courseC/Alloy.html
@@ -141,7 +141,7 @@
 </p>
 <hr/>
 <br>
-<a href="InventoryManagement.html">【酒屋の在庫管理システムの仕様説明】へ</a>
+<a href="IM_Alloy_C.html">【InventoryManagement(Alloy)】へ</a>
 
 </body>
 </html>
\ No newline at end of file
diff --git a/courseC/DTRAM.html b/courseC/DTRAM.html
index 3433513..08a8ccd 100644
--- a/courseC/DTRAM.html
+++ b/courseC/DTRAM.html
@@ -197,7 +197,7 @@
 </p>
 <hr/>
 <br>
-<a href="Alloy.html">【Alloy の概要説明】へ</a>
+<a href="InventoryManagement.html">【酒屋の在庫管理システムの仕様説明】へ</a>
 
 </body>
 </html>
\ No newline at end of file
diff --git a/courseC/IM_Alloy_C.html b/courseC/IM_Alloy_C.html
index 67077b4..d9b8a3f 100644
--- a/courseC/IM_Alloy_C.html
+++ b/courseC/IM_Alloy_C.html
@@ -241,7 +241,7 @@
 
 <hr>
 <br>
-<a href="IM_Alloy_C.html">【STの説明】へ</a>
+<a href="SimpleTwitter.html">【ツイートシステム(SimpleTwitter)の仕様の説明】へ</a>
 </body>
 
 <style>
diff --git a/courseC/IM_DTRAM_C.html b/courseC/IM_DTRAM_C.html
index 1d85834..e2049f8 100644
--- a/courseC/IM_DTRAM_C.html
+++ b/courseC/IM_DTRAM_C.html
@@ -219,7 +219,7 @@
 
 <hr>
 <br>
-<a href="IM_Alloy_C.html">【InventoryManagement(Alloy)】へ</a>
+<a href="Alloy.html">【Alloy の概要説明】へ</a>
 </body>
 
 <style>
diff --git a/courseC/InventoryManagement.html b/courseC/InventoryManagement.html
index aad8829..f79313d 100644
--- a/courseC/InventoryManagement.html
+++ b/courseC/InventoryManagement.html
@@ -28,7 +28,7 @@
 </p>
 <hr/>
 <br>
-<a href="IM_Alloy_C.html">【InventoryManagement(Alloy)】へ</a>
+<a href="IM_DTRAM_C.html">【InventoryManagement(DTRAM)】へ</a>
 
 </body>
 </html>
\ No newline at end of file
diff --git a/courseC/SimpleTwitter.html b/courseC/SimpleTwitter.html
index e0deacd..941ee4e 100644
--- a/courseC/SimpleTwitter.html
+++ b/courseC/SimpleTwitter.html
@@ -28,7 +28,7 @@
 </p>
 <hr/>
 <br>
-<a href="ST_Alloy_C.html">【SimpleTwitter(Alloy)】へ</a>
+<a href="ST_DTRAM_C.html">【SimpleTwitter(DTRAM)】へ</a>
 
 </body>
 </html>
\ No newline at end of file
diff --git a/courseD/Alloy.html b/courseD/Alloy.html
index e0de446..c944d27 100644
--- a/courseD/Alloy.html
+++ b/courseD/Alloy.html
@@ -141,7 +141,7 @@
 </p>
 <hr/>
 <br>
-<a href="InventoryManagement.html">【酒屋の在庫管理システムの仕様説明】へ</a>
+<a href="ST_Alloy_D.html">【SimpleTwitter(Alloy)】へ</a>
 
 </body>
 </html>
\ No newline at end of file
diff --git a/courseD/DTRAM.html b/courseD/DTRAM.html
index 3433513..a89793a 100644
--- a/courseD/DTRAM.html
+++ b/courseD/DTRAM.html
@@ -197,7 +197,7 @@
 </p>
 <hr/>
 <br>
-<a href="Alloy.html">【Alloy の概要説明】へ</a>
+<a href="SimpleTwitter.html">【ツイートシステム(SimpleTwitter) の概要説明】へ</a>
 
 </body>
 </html>
\ No newline at end of file
diff --git a/courseD/InventoryManagement.html b/courseD/InventoryManagement.html
index 957a5f8..bdbc1b9 100644
--- a/courseD/InventoryManagement.html
+++ b/courseD/InventoryManagement.html
@@ -28,7 +28,7 @@
 </p>
 <hr/>
 <br>
-<a href="IM_Alloy_D.html">【InventoryManagement(Alloy)】へ</a>
+<a href="IM_DTRAM_D.html">【InventoryManagement(DTRAM)】へ</a>
 
 </body>
 </html>
\ No newline at end of file
diff --git a/courseD/ST_Alloy_D.html b/courseD/ST_Alloy_D.html
index 26d5fa3..d1cc8b0 100644
--- a/courseD/ST_Alloy_D.html
+++ b/courseD/ST_Alloy_D.html
@@ -258,7 +258,7 @@
 
 <hr>
 <br>
-<a href="ST_Alloy_D.html">【IMの説明】へ</a>
+<a href="InventoryManagement.html">【酒屋の在庫管理システムの仕様説明】へ</a>
 </body>
 
 <style>
diff --git a/courseD/ST_DTRAM_D.html b/courseD/ST_DTRAM_D.html
index 1794009..e91ed85 100644
--- a/courseD/ST_DTRAM_D.html
+++ b/courseD/ST_DTRAM_D.html
@@ -217,7 +217,7 @@
 
 <hr>
 <br>
-<a href="ST_Alloy_D.html">【SimpleTwitter(Alloy)】へ</a>
+<a href="Alloy.html">【Alloy の概要説明】へ</a>
 </body>
 
 <style>
diff --git a/courseD/SimpleTwitter.html b/courseD/SimpleTwitter.html
index 3628312..a5053fa 100644
--- a/courseD/SimpleTwitter.html
+++ b/courseD/SimpleTwitter.html
@@ -28,7 +28,7 @@
 </p>
 <hr/>
 <br>
-<a href="ST_Alloy_D.html">【SimpleTwitter(Alloy) 】へ</a>
+<a href="ST_DTRAM_D.html">【SimpleTwitter(DTRAM) 】へ</a>
 
 </body>
 </html>
\ No newline at end of file
diff --git a/img/DTRAM/SimpleTwitter/ChangeName/DTRAM_kadai4_SimpleTwitter.png b/img/DTRAM/SimpleTwitter/ChangeName/DTRAM_kadai4_SimpleTwitter.png
index 201d5aa..79dcaac 100644
--- a/img/DTRAM/SimpleTwitter/ChangeName/DTRAM_kadai4_SimpleTwitter.png
+++ b/img/DTRAM/SimpleTwitter/ChangeName/DTRAM_kadai4_SimpleTwitter.png
Binary files differ