diff --git a/gallery_dl/extractor/dynastyscans.py b/gallery_dl/extractor/dynastyscans.py
index 50a8b928..03820b86 100644
--- a/gallery_dl/extractor/dynastyscans.py
+++ b/gallery_dl/extractor/dynastyscans.py
@@ -9,7 +9,7 @@
 """Extract manga-chapters from https://dynasty-scans.com/"""
 
 from .common import Extractor, Message
-from .. import text
+from .. import text, util
 import re
 import json
 
@@ -18,19 +18,21 @@ class DynastyscansChapterExtractor(Extractor):
     """Extractor for manga-chapters from dynasty-scans.com"""
     category = "dynastyscans"
     subcategory = "chapter"
-    directory_fmt = ["{category}", "{manga}", "c{chapter:>03} - {title}"]
-    filename_fmt = "{manga}_c{chapter:>03}_{page:>03}.{extension}"
+    directory_fmt = [
+        "{category}", "{manga}", "c{chapter:>03}{chapter_minor}{title:?: //}"]
+    filename_fmt = (
+        "{manga}_c{chapter:>03}{chapter_minor}_{page:>03}.{extension}")
     pattern = [r"(?:https?://)?(?:www\.)?dynasty-scans\.com/chapters/([^/]+)"]
     test = [
         (("http://dynasty-scans.com/chapters/"
           "hitoribocchi_no_oo_seikatsu_ch33"), {
             "url": "ff79ea9956522a8dafd261c1fbe3c74aa8470dc5",
-            "keyword": "eb837477565ee7e647d08ae0ac60c1108234cb80",
+            "keyword": "fb2f470b995df5b301ccede31ed9829a010236db",
         }),
         (("http://dynasty-scans.com/chapters/"
           "new_game_the_spinoff_special_13"), {
             "url": "2cd5e04bd16f842dc884c145a44cf0c64ec27a21",
-            "keyword": "93b75d0c0aaeb849c99f2225a4b97f466bc3ace9",
+            "keyword": "281bbe0fb74b812ced595619ca5876983490dc0e",
         }),
     ]
     url_base = "https://dynasty-scans.com/"
@@ -47,10 +49,9 @@ class DynastyscansChapterExtractor(Extractor):
         data["count"] = len(imgs)
         yield Message.Version, 1
         yield Message.Directory, data
-        for num, img in enumerate(imgs, 1):
+        for data["page"], img in enumerate(imgs, 1):
             url = self.url_base + img["image"]
             text.nameext_from_url(url, data)
-            data["page"] = num
             data["name"] = img["name"]
             yield Message.Url, url, data
 
@@ -58,16 +59,24 @@ class DynastyscansChapterExtractor(Extractor):
         """Collect metadata for extractor-job"""
         info  , pos = text.extract(page, "<h3 id='chapter-title'><b>", "</b>")
         author, pos = text.extract(page, " by ", "</a>", pos)
+        group , pos = text.extract(page, '"icon-print"></i> ', '</span>', pos)
         date  , pos = text.extract(page, '"icon-calendar"></i> ', '<', pos)
+
         match = re.match(
-            r"(?:<a [^>]+>)?([^<]+)(?:</a>)?(?: ch(\d+))?(?:: (.+))?",
+            (r"(?:<a[^>]*>)?([^<]+)(?:</a>)?"  # manga name
+             r"(?: ch(\d+)([^:<]*))?"  # chapter info
+             r"(?:: (.+))?"),  # title
             info
         )
+
         return {
             "manga": text.unescape(match.group(1)),
-            "chapter": match.group(2) or "",
-            "title": text.unescape(match.group(3) or ""),
+            "chapter": util.safe_int(match.group(2)),
+            "chapter_minor": match.group(3) or "",
+            "title": text.unescape(match.group(4) or ""),
             "author": text.remove_html(author),
+            "group": (text.remove_html(group) or
+                      text.extract(group, ' alt="', '"')[0] or ""),
             "date": date,
             "lang": "en",
             "language": "English",