diff --git a/members/saruwatari/intoroduction.md b/members/saruwatari/intoroduction.md
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+こんにちは
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diff --git a/members/saruwatarii/phase1/greeting.js b/members/saruwatarii/phase1/greeting.js
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+const readline = require('readline');
+
+const rl = readline.createInterface({
+  input: process.stdin,
+  output: process.stdout
+});
+
+rl.question('名前を入力してください: ', (name) => {
+  if (!name.trim()) {
+    console.error('エラー: 名前が入力されていません');
+    rl.close();
+    return;
+  }
+
+  // Process: 時間帯に応じて挨拶を変える
+  const hour = new Date().getHours();
+  let greeting;
+
+  if (hour >= 5 && hour < 12) {
+    greeting = 'おはよう';
+  } else if (hour >= 12 && hour < 18) {
+    greeting = 'こんにちは';
+  } else {
+    greeting = 'こんばんは';
+  }
+
+  const result = `${name}、${greeting}`;
+
+  // Output: 名前、挨拶
+  console.log(result);
+  rl.close();
+});
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diff --git a/members/saruwatarii/phase1/ipo_crad.md b/members/saruwatarii/phase1/ipo_crad.md
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+## IPOカード
+
+コードを書く**前に**、必ずIPOカードを記入する。
+
+| 項目 | 内容 |
+|------|------|
+| **Input** |名前 |
+| **Process** |受け取った名前に挨拶（こんにちは）とつける |
+| **Output** |名前、こんにちは |
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