diff --git a/.idea/dataSources.xml b/.idea/dataSources.xml
index 2664d1c..651da45 100644
--- a/.idea/dataSources.xml
+++ b/.idea/dataSources.xml
@@ -2,23 +2,10 @@
 <project version="4">
   <component name="DataSourceManagerImpl" format="xml" multifile-model="true">
     <data-source source="LOCAL" name="@localhost" uuid="90f8ee11-600e-4155-a316-e8062c7c828b">
-      <driver-ref>mysql.8</driver-ref>
+      <driver-ref>mariadb</driver-ref>
       <synchronize>true</synchronize>
-      <jdbc-driver>com.mysql.cj.jdbc.Driver</jdbc-driver>
-      <jdbc-url>jdbc:mysql://localhost:3306</jdbc-url>
-      <jdbc-additional-properties>
-        <property name="com.intellij.clouds.kubernetes.db.host.port" />
-        <property name="com.intellij.clouds.kubernetes.db.enabled" value="false" />
-        <property name="com.intellij.clouds.kubernetes.db.resource.type" value="Deployment" />
-        <property name="com.intellij.clouds.kubernetes.db.container.port" />
-      </jdbc-additional-properties>
-      <working-dir>$ProjectFileDir$</working-dir>
-    </data-source>
-    <data-source source="LOCAL" name="@prod" uuid="ea495604-156c-4d96-9100-9074495ce007">
-      <driver-ref>mysql.8</driver-ref>
-      <synchronize>true</synchronize>
-      <jdbc-driver>com.mysql.cj.jdbc.Driver</jdbc-driver>
-      <jdbc-url>jdbc:mysql://localhost:3306/chzzk</jdbc-url>
+      <jdbc-driver>org.mariadb.jdbc.Driver</jdbc-driver>
+      <jdbc-url>jdbc:mariadb://localhost:3306</jdbc-url>
       <jdbc-additional-properties>
         <property name="com.intellij.clouds.kubernetes.db.host.port" />
         <property name="com.intellij.clouds.kubernetes.db.enabled" value="false" />
diff --git a/README.md b/README.md
index 4fd6bf5..679378d 100644
--- a/README.md
+++ b/README.md
@@ -15,6 +15,7 @@
 - [x] \<counter:counter_name>
 - [x] \<personal_counter:counter_name>
 - [x] \<daily_counter:counter_name>
+- [x] \<days:yyyy-mm-dd>
 
 ### 관리 명령어 (on Discord)
 - [x] /register chzzk_id: \[치지직 고유ID]
@@ -42,6 +43,8 @@
 - 바보
   - `/add label: 바보 content: 나 바보 아니다?`
   - `/add label: 바보 content: <counter:fool> 번째 바보? 나 바보 아니다?`
+- 첫방송
+  - `/add label: 첫방송 content: 24년 7월 23일부터 <days:2024-07-23>일 째 방송중!`
 
 ## 사용 기술스택
 - [Exposed](https://github.com/JetBrains/Exposed)
diff --git a/src/main/kotlin/space/mori/chzzk_bot/chzzk/MessageHandler.kt b/src/main/kotlin/space/mori/chzzk_bot/chzzk/MessageHandler.kt
index df1029c..97793f2 100644
--- a/src/main/kotlin/space/mori/chzzk_bot/chzzk/MessageHandler.kt
+++ b/src/main/kotlin/space/mori/chzzk_bot/chzzk/MessageHandler.kt
@@ -25,6 +25,7 @@ class MessageHandler(
     private val dailyCounterPattern = Regex("<daily_counter:([^>]+)>")
     private val namePattern = Regex("<name>")
     private val followPattern = Regex("<following>")
+    private val daysPattern = """<days:(\d{4})-(\d{2})-(\d{2})>""".toRegex()
 
     init {
         reloadCommand()
@@ -162,6 +163,16 @@ class MessageHandler(
             }
         }
 
+        result = daysPattern.replace(result) {
+            val (year, month, day) = it.destructured
+            val pastDate = LocalDateTime.of(year.toInt(), month.toInt(), day.toInt(), 0, 0, 0)
+            val today = LocalDateTime.now()
+
+            val daysBetween = ChronoUnit.DAYS.between(pastDate, today)
+
+            daysBetween.toString()
+        }
+
         result = counterPattern.replace(result) {
             val name = it.groupValues[1]
             CounterService.updateCounterValue(name, 1, user).toString()