diff --git a/app/MetadataResolver/DLsiteResolver.php b/app/MetadataResolver/DLsiteResolver.php
index 951bee4..94821a7 100644
--- a/app/MetadataResolver/DLsiteResolver.php
+++ b/app/MetadataResolver/DLsiteResolver.php
@@ -52,6 +52,20 @@ class DLsiteResolver implements Resolver
 
     public function resolve(string $url): Metadata
     {
+        //アフィリエイトの場合は普通のURLに変換
+        if (strpos($url, '/dlaf/=/link/') !== false) {
+            preg_match('~www\.dlsite\.com/(?P<genre>.+)/dlaf/=/link/work/aid/.+/id/(?P<titleId>..\d+)(\.html)?~', $url, $matches);
+            $url = "https://www.dlsite.com/{$matches['genre']}/work/=/product_id/{$matches['titleId']}.html";
+        }
+        if (strpos($url, '/dlaf/=/aid/') !== false) {
+            preg_match('~www\.dlsite\.com/.+/dlaf/=/aid/.+/url/(?P<url>.+)~', $url, $matches);
+            $affiliate_url = urldecode($matches['url']);
+            if (preg_match('~www\.dlsite\.com/.+/(work|announce)/=/product_id/..\d+(\.html)?~', $affiliate_url, $matches)) {
+                $url = $affiliate_url;
+            } else {
+                throw new \RuntimeException("アフィリエイト先のリンクがDLsiteのタイトルではありません: $affiliate_url");
+            }
+        }
 
         //スマホページの場合はPCページに正規化
         if (strpos($url, '-touch') !== false) {
diff --git a/app/MetadataResolver/MetadataResolver.php b/app/MetadataResolver/MetadataResolver.php
index 363b6f3..88981e2 100644
--- a/app/MetadataResolver/MetadataResolver.php
+++ b/app/MetadataResolver/MetadataResolver.php
@@ -16,6 +16,8 @@ class MetadataResolver implements Resolver
         '~ec\.toranoana\.(jp|shop)/(tora|joshi)(_[rd]+)?/(ec|digi)/item/~' => ToranoanaResolver::class,
         '~iwara\.tv/(videos|images)/.*~' => IwaraResolver::class,
         '~www\.dlsite\.com/.*/(work|announce)/=/product_id/..\d+(\.html)?~' => DLsiteResolver::class,
+        '~www\.dlsite\.com/.*/dlaf/=/link/(work|announce)/aid/.+/..\d+(\.html)?~' => DLsiteResolver::class,
+        '~www\.dlsite\.com/.*/dlaf/=/aid/.+/url/.+~' => DLsiteResolver::class,
         '~dlsite\.jp/...tw/..\d+~' => DLsiteResolver::class,
         '~www\.pixiv\.net/member_illust\.php\?illust_id=\d+~' => PixivResolver::class,
         '~www\.pixiv\.net/user/\d+/series/\d+~' => PixivResolver::class,
diff --git a/tests/Unit/MetadataResolver/DLsiteResolverTest.php b/tests/Unit/MetadataResolver/DLsiteResolverTest.php
index 07d7d0c..2f163cb 100644
--- a/tests/Unit/MetadataResolver/DLsiteResolverTest.php
+++ b/tests/Unit/MetadataResolver/DLsiteResolverTest.php
@@ -227,6 +227,48 @@ class DLsiteResolverTest extends TestCase
         }
     }
 
+    public function testAffiliateLink()
+    {
+        $responseText = file_get_contents(__DIR__ . '/../../fixture/DLsite/testHome.html');
+
+        $this->createResolver(DLsiteResolver::class, $responseText);
+
+        $metadata = $this->resolver->resolve('https://www.dlsite.com/home/dlaf/=/link/work/aid/eai04191/id/RJ221761.html');
+        $this->assertEquals('ひつじ、数えてあげるっ', $metadata->title);
+        $this->assertEquals('サークル名: Butterfly Dream' . PHP_EOL . '眠れないあなたに彼女が羊を数えてくれる音声です。', $metadata->description);
+        $this->assertEquals('https://img.dlsite.jp/modpub/images2/work/doujin/RJ222000/RJ221761_img_main.jpg', $metadata->image);
+        $this->assertEquals(['癒し', 'バイノーラル/ダミヘ', '日常/生活', 'ほのぼの', '恋人同士'], $metadata->tags);
+        if ($this->shouldUseMock()) {
+            $this->assertSame('https://www.dlsite.com/home/work/=/product_id/RJ221761.html', (string) $this->handler->getLastRequest()->getUri());
+        }
+    }
+
+    public function testAffiliateUrl()
+    {
+        $responseText = file_get_contents(__DIR__ . '/../../fixture/DLsite/testHome.html');
+
+        $this->createResolver(DLsiteResolver::class, $responseText);
+
+        $metadata = $this->resolver->resolve('http://www.dlsite.com/home/dlaf/=/aid/eai04191/url/https%3A%2F%2Fwww.dlsite.com%2Fhome%2Fwork%2F=%2Fproduct_id%2FRJ221761.html');
+        $this->assertEquals('ひつじ、数えてあげるっ', $metadata->title);
+        $this->assertEquals('サークル名: Butterfly Dream' . PHP_EOL . '眠れないあなたに彼女が羊を数えてくれる音声です。', $metadata->description);
+        $this->assertEquals('https://img.dlsite.jp/modpub/images2/work/doujin/RJ222000/RJ221761_img_main.jpg', $metadata->image);
+        $this->assertEquals(['癒し', 'バイノーラル/ダミヘ', '日常/生活', 'ほのぼの', '恋人同士'], $metadata->tags);
+        if ($this->shouldUseMock()) {
+            $this->assertSame('https://www.dlsite.com/home/work/=/product_id/RJ221761.html', (string) $this->handler->getLastRequest()->getUri());
+        }
+    }
+
+    public function testAffiliateBadUrl()
+    {
+        $this->createResolver(DLsiteResolver::class, '');
+
+        $this->expectException(\RuntimeException::class);
+        $this->expectExceptionMessage('アフィリエイト先のリンクがDLsiteのタイトルではありません: https://www.dlsite.com/home/');
+
+        $this->resolver->resolve('http://www.dlsite.com/home/dlaf/=/aid/eai04191/url/https%3A%2F%2Fwww.dlsite.com%2Fhome%2F');
+    }
+
     public function testHTMLdescription()
     {
         $responseText = file_get_contents(__DIR__ . '/../../fixture/DLsite/testHTMLdescription.html');