diff --git a/internal/service/image_proxy_remote_fetch.go b/internal/service/image_proxy_remote_fetch.go
index 437fded..27c16ca 100644
--- a/internal/service/image_proxy_remote_fetch.go
+++ b/internal/service/image_proxy_remote_fetch.go
@@ -82,14 +82,37 @@ func (p *ImageProxy) fetchRemoteImageOnce(ctx context.Context, raw, host string,
 func applyRemoteImageHeaders(req *http.Request, host string) {
 	req.Header.Set("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0 Safari/537.36")
 	req.Header.Set("Accept", "image/avif,image/webp,image/apng,image/svg+xml,image/*,*/*;q=0.8")
-	req.Header.Set("Accept-Language", "zh-CN,zh;q=0.9,en;q=0.8")
+	req.Header.Set("Accept-Language", "zh-CN,zh;q=0.9,ja;q=0.8,en;q=0.7")
 	req.Header.Set("Cache-Control", "no-cache")
 	req.Header.Set("Pragma", "no-cache")
+	if referer := remoteImageReferer(host); referer != "" {
+		req.Header.Set("Referer", referer)
+	}
+}
+
+func remoteImageReferer(host string) string {
+	h := strings.ToLower(strings.TrimSpace(host))
 	switch {
-	case strings.Contains(host, "doubanio.com"):
-		req.Header.Set("Referer", "https://movie.douban.com/")
-	case strings.Contains(host, "bgm.tv"):
-		req.Header.Set("Referer", "https://bgm.tv/")
+	case strings.Contains(h, "doubanio.com"):
+		return "https://movie.douban.com/"
+	case strings.Contains(h, "bgm.tv"):
+		return "https://bgm.tv/"
+	case strings.Contains(h, "javbus") || strings.Contains(h, "busjav") || strings.Contains(h, "dmmbus") || strings.Contains(h, "javsee"):
+		return "https://www.javbus.com/"
+	case strings.Contains(h, "javdb") || strings.Contains(h, "jdbstatic"):
+		return "https://javdb.com/"
+	case strings.Contains(h, "dmm.co.jp") || strings.Contains(h, "dmm.com"):
+		return "https://www.dmm.co.jp/"
+	case strings.Contains(h, "mgstage.com"):
+		return "https://www.mgstage.com/"
+	case strings.Contains(h, "faleno.jp"):
+		return "https://faleno.jp/"
+	case strings.Contains(h, "fc2.com"):
+		return "https://adult.contents.fc2.com/"
+	case h != "":
+		return "https://" + h + "/"
+	default:
+		return ""
 	}
 }
 
@@ -120,8 +143,8 @@ func fetchRemoteImageWithCurl(ctx context.Context, raw, host string) ([]byte, st
 		"--header", "Cache-Control: no-cache",
 		"--header", "Pragma: no-cache",
 	}
-	if isDoubanImageHost(host) {
-		args = append(args, "--referer", "https://movie.douban.com/")
+	if referer := remoteImageReferer(host); referer != "" {
+		args = append(args, "--referer", referer)
 	}
 	args = append(args, "--", raw)
 
diff --git a/internal/service/image_proxy_remote_test.go b/internal/service/image_proxy_remote_test.go
index ab94bd6..2f56ef0 100644
--- a/internal/service/image_proxy_remote_test.go
+++ b/internal/service/image_proxy_remote_test.go
@@ -299,3 +299,26 @@ func TestImageProxyDoesNotCacheMislabeledRemoteResponse(t *testing.T) {
 		t.Fatalf("upstream calls = %d, want 1", got)
 	}
 }
+
+func TestRemoteImageRefererForAdultHosts(t *testing.T) {
+	tests := []struct {
+		host string
+		want string
+	}{
+		{"www.javbus.com", "https://www.javbus.com/"},
+		{"pics.dmm.co.jp", "https://www.dmm.co.jp/"},
+		{"javdb.com", "https://javdb.com/"},
+		{"image.mgstage.com", "https://www.mgstage.com/"},
+		{"img.faleno.jp", "https://faleno.jp/"},
+		{"adult.contents.fc2.com", "https://adult.contents.fc2.com/"},
+		{"img1.doubanio.com", "https://movie.douban.com/"},
+		{"lain.bgm.tv", "https://bgm.tv/"},
+		{"example.com", "https://example.com/"},
+		{"", ""},
+	}
+	for _, tt := range tests {
+		if got := remoteImageReferer(tt.host); got != tt.want {
+			t.Errorf("remoteImageReferer(%q) = %q, want %q", tt.host, got, tt.want)
+		}
+	}
+}