diff --git a/src/main/java/Main.java b/src/main/java/Main.java
index e91d4af..7f58425 100644
--- a/src/main/java/Main.java
+++ b/src/main/java/Main.java
@@ -1,5 +1,5 @@
 import entities.Const;
-import entities.Vec2;
+import entities.Pair;
 import org.lwjgl.glfw.*;
 import org.lwjgl.opengl.*;
 import views.PlayerRenderer;
@@ -37,7 +37,7 @@
         initWindow();
         initRender();
 
-        playerRenderer = new PlayerRenderer("resources/test.png", new Vec2(640, 480));
+        playerRenderer = new PlayerRenderer("resources/test.png", new Pair<>(640d, 480d));
 
         // メインループ
         while (!glfwWindowShouldClose(hWnd)) {
diff --git a/src/main/java/entities/Image2D.java b/src/main/java/entities/Image2D.java
index 278530e..163c273 100644
--- a/src/main/java/entities/Image2D.java
+++ b/src/main/java/entities/Image2D.java
@@ -1,5 +1,7 @@
 package entities;
 
+import org.lwjgl.system.CallbackI;
+
 import static org.lwjgl.opengl.GL11.*;
 
 //---------------------------------------------------------------
@@ -7,8 +9,8 @@
 public class Image2D {
 
     private int id; // テクスチャのID
-    private Vec2 wh; // スプライトの幅高
-    private Vec2 position; // スプライトの座標（画面座標）
+    private Pair<Double> wh; // スプライトの幅高
+    private Pair<Double> position; // スプライトの座標（画面座標）
     private Color color; // スプライトの色
     private double rotation; // 回転(度)
     private double scale; // 拡大
@@ -23,13 +25,13 @@
         else
             this.id = 0;
 
-        this.position = new Vec2(x, y);
+        this.position = new Pair<>(x, y);
         this.color = new Color(1, 1, 1, 1);
 
         if (tex != null)
-            wh = new Vec2(tex.getWidth(), tex.getHeight());
+            wh = new Pair<>((double)tex.getWidth(), (double)tex.getHeight());
         else
-            wh = new Vec2(30, 30);
+            wh = new Pair<>(30d, 30d);
 
         rotation = 0.0;
         scale = 1.0;
@@ -57,7 +59,7 @@
         glMatrixMode(GL_MODELVIEW);
         // 行列の設定
         glLoadIdentity(); // 単位行列化
-        glTranslated(position.getX(), position.getY(), 0); // 移動
+        glTranslated(position.getFirst(), position.getSecond(), 0); // 移動
         glRotated(rotation, 0, 0, 1); // 回転
         glScaled(scale, scale, 1); // 拡縮
 
@@ -76,13 +78,13 @@
         // ポリゴンの作成とテクスチャの適応
         glBegin(GL_TRIANGLE_STRIP);
         glTexCoord2d(0, 0);
-        glVertex2d(-wh.getX() / 2, wh.getY() / 2);
+        glVertex2d(-wh.getFirst() / 2, wh.getSecond() / 2);
         glTexCoord2d(0, 1);
-        glVertex2d(-wh.getX() / 2, -wh.getY() / 2);
+        glVertex2d(-wh.getFirst() / 2, -wh.getSecond() / 2);
         glTexCoord2d(1, 0);
-        glVertex2d(wh.getX() / 2, wh.getY() / 2);
+        glVertex2d(wh.getFirst() / 2, wh.getSecond() / 2);
         glTexCoord2d(1, 1);
-        glVertex2d(wh.getX() / 2, -wh.getY() / 2);
+        glVertex2d(wh.getFirst() / 2, -wh.getSecond() / 2);
         glEnd();
 
         // 行列の破棄
diff --git a/src/main/java/entities/Vec2.java b/src/main/java/entities/Vec2.java
deleted file mode 100644
index 3d7b0cd..0000000
--- a/src/main/java/entities/Vec2.java
+++ /dev/null
@@ -1,22 +0,0 @@
-package entities;
-
-//---------------------------------------------------------------
-public class Vec2 extends Pair<Double> {
-
-    //---------------------------------------------------------------
-    //---------------------------------------------------------------
-    public Vec2(double x, double y) {
-        super(x, y);
-    }
-
-    //---------------------------------------------------------------
-    //---------------------------------------------------------------
-    public Double getX() {
-        return this.getFirst();
-    }
-
-    public Double getY() {
-        return this.getSecond();
-    }
-    //---------------------------------------------------------------
-}
diff --git a/src/main/java/views/PlayerRenderer.java b/src/main/java/views/PlayerRenderer.java
index 68e359b..2ce4485 100644
--- a/src/main/java/views/PlayerRenderer.java
+++ b/src/main/java/views/PlayerRenderer.java
@@ -1,8 +1,8 @@
 package views;
 
 import entities.Image2D;
+import entities.Pair;
 import entities.Texture;
-import entities.Vec2;
 
 //---------------------------------------------------------------
 //
@@ -14,9 +14,9 @@
     //---------------------------------------------------------------
     //---------------------------------------------------------------
     //
-    public PlayerRenderer(String path, Vec2 position) {
+    public PlayerRenderer(String path, Pair<Double> position) {
         texture = new Texture("player", path);
-        img = new Image2D(texture, position.getX(), position.getY());
+        img = new Image2D(texture, position.getFirst(), position.getSecond());
     }
 
     //---------------------------------------------------------------