diff --git a/app/MetadataResolver/CienResolver.php b/app/MetadataResolver/CienResolver.php
new file mode 100644
index 0000000..73f8c0e
--- /dev/null
+++ b/app/MetadataResolver/CienResolver.php
@@ -0,0 +1,29 @@
+<?php
+
+namespace App\MetadataResolver;
+
+use Carbon\Carbon;
+
+class CienResolver extends MetadataResolver
+{
+    public function resolve(string $url): Metadata
+    {
+        $client = new \GuzzleHttp\Client();
+        $res = $client->get($url);
+        if ($res->getStatusCode() === 200) {
+            $ogpResolver = new OGPResolver();
+            $metadata = $ogpResolver->parse($res->getBody());
+
+            // 画像URLから有効期限の起点を拾う
+            parse_str(parse_url($metadata->image, PHP_URL_QUERY), $params);
+            if (empty($params['px-time'])) {
+                throw new \RuntimeException('Parameter "px-time" not found. Image=' . $metadata->image . ' Source=' . $url);
+            }
+            $metadata->expires_at = Carbon::createFromTimestamp($params['px-time'])->addHour(1);
+
+            return $metadata;
+        } else {
+            throw new \RuntimeException("{$res->getStatusCode()}: $url");
+        }
+    }
+}
diff --git a/app/MetadataResolver/MetadataResolver.php b/app/MetadataResolver/MetadataResolver.php
index a00625b..b55da22 100644
--- a/app/MetadataResolver/MetadataResolver.php
+++ b/app/MetadataResolver/MetadataResolver.php
@@ -21,6 +21,7 @@ class MetadataResolver implements Resolver
         '~www\.patreon\.com/~' => PatreonResolver::class,
         '~www\.deviantart\.com/.*/art/.*~' => DeviantArtResolver::class,
         '~\.syosetu\.com/n\d+[a-z]{2,}~' => NarouResolver::class,
+        '~ci-en\.jp/creator/\d+/article/\d+~' => CienResolver::class,
     ];
 
     public $mimeTypes = [