diff --git a/system/demo/add.png b/system/demo/add.png
new file mode 100644
index 0000000..097c6e4
--- /dev/null
+++ b/system/demo/add.png
Binary files differ
diff --git a/system/demo/demo.html b/system/demo/demo.html
index 0bb0b2d..c627cbf 100644
--- a/system/demo/demo.html
+++ b/system/demo/demo.html
@@ -240,7 +240,7 @@
       <h2>水やりの教育コーナー</h2>
       <p>植物は朝や夕方に水をあげると効果的です。昼間は水が蒸発しやすく、根に届きにくくなります。</p>
       <p>水のやり過ぎは根腐れの原因になります。</p>
-      <img src="images/morning_watering.png" alt="朝の水やり" class="info-image" />
+      <img src="add.png" alt="朝の水やり" class="info-image" />
     </div>
 
     <div id="container">
@@ -257,15 +257,15 @@
       <h2>野菜ごとの水やりポイント</h2>
 
       <div class="plant">
-        <img src="images/tomato.png" alt="トマト" class="veg-img" />
+        <img src="tomato.png" alt="トマト" class="veg-img" />
         <p><strong>トマト：</strong>乾燥に強い。根が深いので週に2〜3回たっぷり。</p>
       </div>
       <div class="plant">
-        <img src="images/cucumber.png" alt="キュウリ" class="veg-img" />
+        <img src="cucumber.png" alt="キュウリ" class="veg-img" />
         <p><strong>キュウリ：</strong>毎日必要。水を切らすと苦味が出る。</p>
       </div>
       <div class="plant">
-        <img src="images/eggplant.png" alt="ナス" class="veg-img" />
+        <img src="eggplant.png" alt="ナス" class="veg-img" />
         <p><strong>ナス：</strong>湿った土を好む。1日2回が理想。</p>
       </div>
 
@@ -296,10 +296,14 @@
       let backZoneEnterTime = null;
 
       const waterImg = new Image();
-      waterImg.src = "water.png";
+	waterImg.src = "water.png";
 
       const vegetableImg = new Image();
-      vegetableImg.src = "vegetable.png";
+	vegetableImg.src = "vegetable.png";
+
+      const handIcon= new Image();
+	handIcon.src="hand_icon.png";
+
 
       let handInZoneA = false;
       let handInZoneB = false;
@@ -315,11 +319,9 @@
         return flippedX >= zoneLeft && flippedX <= zoneRight;
       }
 
-      function drawWrist(x, y, ctx) {
-        ctx.beginPath();
-        ctx.arc(x, y, 10, 0, Math.PI * 2);
-        ctx.fillStyle = 'rgba(255,0,0,0.7)';
-        ctx.fill();
+	function drawWrist(x, y, ctx) {
+	    const iconSize = 40;
+	    ctx.drawImage(handIcon, x - iconSize / 2, y - iconSize / 2,iconSize,iconSize);
       }
 
       let net;