diff --git a/Source/Render/Primitives/ScreenLine.cpp b/Source/Render/Primitives/ScreenLine.cpp
index d5dd5ef4..107ac6c1 100644
--- a/Source/Render/Primitives/ScreenLine.cpp
+++ b/Source/Render/Primitives/ScreenLine.cpp
@@ -14,6 +14,7 @@
 #include "Resource/ResourceMgr.h"
 #include "Resource/Sprites/ActionResource.h"
 #include "Resource/Sprites/SpriteResource.h"
+#include "UI/Chat/UISubChatHisWnd.h"
 #include "Utility/Math/AffineMatrix.h"
 
 #include <cmath>
@@ -45,6 +46,22 @@ void UIRoMapWnd::DrawRecordAreas() {
   }
 }
 
+// OFFSET: 0x00918300
+// FUNCTION: fn_12593
+void UISubChatHisWnd::Slot43() {
+  int x = 0;
+  int y = 0;
+  this->ToScreen(x, y);
+  DrawAlphaRectangle(
+    g_renderer->primitives, g_renderer->queues, x + 1, y + 1, this->m_inputWidth - 2, this->m_inputHeight, 0x66000000, g_renderer->fog.supported != 0,
+    g_depthStart, g_depthEnd
+  );
+  DrawAlphaRectangle(
+    g_renderer->primitives, g_renderer->queues, this->m_state.unknown_0000 + 1, this->m_state.unknown_0004 + 1, this->m_state.unknown_0008 - 2,
+    this->m_state.unknown_000C - 2, this->m_state.unknown_0014, g_renderer->fog.supported != 0, g_depthStart, g_depthEnd
+  );
+}
+
 // OFFSET: 0x009189C0
 // FUNCTION: fn_12595
 void UIRoMapWnd::DrawKafraIcon(float x, float y) {
diff --git a/Source/UI/Chat/UISubChatHisWnd.h b/Source/UI/Chat/UISubChatHisWnd.h
index 17392070..fc9a52e5 100644
--- a/Source/UI/Chat/UISubChatHisWnd.h
+++ b/Source/UI/Chat/UISubChatHisWnd.h
@@ -38,6 +38,7 @@ public:
   void Slot27(int x, int y) override;
   void Slot31(int x, int y) override;
   bool Slot42(void* output) override;
+  void Slot43() override;
   UIChatHisBox* ChatBox() const { return m_chatBox; }
   std::string Name() const { return m_name; }