diff --git a/src/main/java/entities/modelExtentions/Flags.java b/src/main/java/entities/modelExtentions/Flags.java
deleted file mode 100644
index 95f5d80..0000000
--- a/src/main/java/entities/modelExtentions/Flags.java
+++ /dev/null
@@ -1,77 +0,0 @@
-package entities.modelExtentions;
-
-import java.io.IOException;
-import java.nio.charset.Charset;
-import java.nio.file.Files;
-import java.nio.file.Path;
-import java.nio.file.Paths;
-import java.util.ArrayList;
-import java.util.List;
-
-public class Flags {
-
-    private ArrayList<Integer> values = new ArrayList<>();
-    private int count = 0;
-
-    //---------------------------------------------------------------
-    //---------------------------------------------------------------
-    public Flags() {
-        Path file = Paths.get("resources/stage.txt");
-        String[] data = new String[1];
-
-        try {
-            List<String> lines = Files.readAllLines(file, Charset.forName("Shift-JIS"));
-
-            for (int i = 0; i < lines.size(); i++) data = lines.get(i).split(",");
-            for (int i = 0; i < data.length; i++) values.add(Integer.parseInt(data[i]));
-            for (int v : values) System.out.println(v);
-
-        } catch (IOException e) {
-            System.out.println("Failed to load stage.txt");
-        }
-    }
-
-    //---------------------------------------------------------------
-    //---------------------------------------------------------------
-    // getter
-    public ArrayList<Integer> getValues() {
-        return values;
-    }
-
-    //---------------------------------------------------------------
-    //---------------------------------------------------------------
-    // フラグのタイミングと一致しているかをチェック
-    public boolean isFlag(int timing) {
-        for (int flag : values)
-            if (timing == flag) return true;
-        return false;
-    }
-
-    //---------------------------------------------------------------
-    // 奇数番目のフラグで穴を開けるフラグを提示する
-    public boolean isOpenFlag(double x) {
-
-        if (count % 2 != 0) return false;
-
-        double cx = (double) values.get(count) - 0.5;
-        if (cx <= x) {
-            if (count < values.size() - 1) count++;
-            return true;
-        }
-        return false;
-    }
-
-    //---------------------------------------------------------------
-    // 偶数番目のフラグで穴を閉じるフラグを提示する
-    public boolean isCloseFlag(double x) {
-        if (count % 2 == 0) return false;
-
-        double cx = (double) values.get(count) - 0.5;
-        if (cx <= x + 0.25) {
-            if (count < values.size() - 1) count++;
-            return true;
-        }
-        return false;
-    }
-
-}