diff --git a/README.md b/README.md
index 1106ac71bf1b702840a9271b486160dfad5ade53..c73f8fa003edea2f25b251bfcbf15aa77d5726aa 100644
--- a/README.md
+++ b/README.md
@@ -87,4 +87,5 @@ I'd like to talk about some feature, differences and other interesting topics ma
 <br><br><br>
 ### Caution
 This project is basically based on Phaser 3.24.1<br>
-Docs were meant to treat about foundamental part of Phaser 3 which would not change. But if there are huge gap between latest version, please let us know.
\ No newline at end of file
+Docs were meant to treat about foundamental part of Phaser 3 which would not change. But if there are huge gap between latest version, please let us know.
+
diff --git a/README_kr.md b/README_kr.md
index b8566dab77bc99cce9b5099bf57803dcd429c686..6e7d7de13bd7b476a9efaf1dc77ccd0024a2e083 100644
--- a/README_kr.md
+++ b/README_kr.md
@@ -87,4 +87,7 @@ Phaser 게임 개발에 도움이 될 수 있는 여러 가지 특징, 차이 
 <br><br><br>
 ### 주의사항
 본 프로젝트는 Phaser 3.24.1를 기반으로 제작하였습니다.<br>
-문서들은 변화의 여지가 없을만한 Phaser 3의 기본적인 부분을 다루고자 하였습니다. 하지만 최신 버전과 큰 차이가 있다고 느껴지실 경우, 알려주시면 감사하겠습니다.
\ No newline at end of file
+문서들은 변화의 여지가 없을만한 Phaser 3의 기본적인 부분을 다루고자 하였습니다. 하지만 최신 버전과 큰 차이가 있다고 느껴지실 경우, 알려주시면 감사하겠습니다.
+
+<br><br><br><br>
+<img src="by.PNG" alt="CC_BY" width="150"/>
\ No newline at end of file
diff --git a/by.png b/by.png
new file mode 100644
index 0000000000000000000000000000000000000000..c8473a24786ab016d9c3e717a380910f7cbb0fff
Binary files /dev/null and b/by.png differ
diff --git a/lifecycle/README.md b/lifecycle/README.md
index 74ffddda2d22d3faa68794a912394329e95f60a8..575ba6cbde1cdcc134a3b884184be9847f342868 100644
--- a/lifecycle/README.md
+++ b/lifecycle/README.md
@@ -46,4 +46,7 @@ Of course, there is state of Phaser Scene in **STOP** state which stands for whe
 <br><br>
 
 ---
-[back to main](../README.md)
\ No newline at end of file
+[back to main](../README.md)
+
+<br><br><br><br>
+<img src="../by.PNG" alt="CC_BY" width="150"/>
\ No newline at end of file
diff --git a/lifecycle/README_kr.md b/lifecycle/README_kr.md
index 2ab8c185624090473692969e702036b91184fa92..8666816b457874698bc2242adff9e7028293da7a 100644
--- a/lifecycle/README_kr.md
+++ b/lifecycle/README_kr.md
@@ -46,4 +46,7 @@ Phaser의 Scene은 크게 다음의 세 가지 상태로 이루어져 있습니
 <br><br>
 
 ---
-[메인으로](../README_kr.md)
\ No newline at end of file
+[메인으로](../README_kr.md)
+
+<br><br><br><br>
+<img src="../by.PNG" alt="CC_BY" width="150"/>
\ No newline at end of file
diff --git a/physics/README.md b/physics/README.md
index 591dd755f845588a73da790d36ee4fcd56daa10b..9d52089ac5ee31b34cd16cea29baac63978527f5 100644
--- a/physics/README.md
+++ b/physics/README.md
@@ -18,4 +18,7 @@ From above, you may think 'why should we even consider about **matter** while it
 <br><br>
 
 ---
-[back to main](../README.md)
\ No newline at end of file
+[back to main](../README.md)
+
+<br><br><br><br>
+<img src="../by.PNG" alt="CC_BY" width="150"/>
\ No newline at end of file
diff --git a/physics/README_kr.md b/physics/README_kr.md
index 992747b397eb1249afbd05453b6d66647354dd75..e0025f0ce5d3877f011c2461f380d33f8312bf9e 100644
--- a/physics/README_kr.md
+++ b/physics/README_kr.md
@@ -19,4 +19,7 @@ Phaser에는 세 가지의 물리 엔진이 있습니다. **arcade**, **matter**
 <br><br>
 
 ---
-[메인으로](../README_kr.md)
\ No newline at end of file
+[메인으로](../README_kr.md)
+
+<br><br><br><br>
+<img src="../by.PNG" alt="CC_BY" width="150"/>
\ No newline at end of file