diff --git a/core/watchlist_scanner.py b/core/watchlist_scanner.py
index e2a345aa..239cfba0 100644
--- a/core/watchlist_scanner.py
+++ b/core/watchlist_scanner.py
@@ -354,8 +354,15 @@ def _normalize_album_for_match(name: str) -> str:
     return cleaned
 
 
+# Capture the FULL trailing number, including multi-part / decimal volumes.
+# Normalization strips the dot in "Vol.5.5" to "vol 5 5", so without the
+# `(?:\s+\d+)*` the extractor grabbed only the last "5" — making "Vol.5",
+# "Vol.5.5" and "Vol.4.5" all look like volume "5" and collapse together. That
+# made the watchlist treat tracks from different character-song CD volumes as
+# duplicates and skip them (Sokhi: partially-filled discography never completed).
 _VOLUME_MARKER_RE = re.compile(
-    r'\b(?:vol(?:ume)?|pt|part|disc|book|chapter|episode)\.?\s*(\d+)\b|\b(\d+)\s*$',
+    r'\b(?:vol(?:ume)?|pt|part|disc|book|chapter|episode)\.?\s*(\d+(?:\s+\d+)*)\b'
+    r'|\b(\d+(?:\s+\d+)*)\s*$',
     re.IGNORECASE,
 )
 
diff --git a/tests/test_watchlist_album_match.py b/tests/test_watchlist_album_match.py
index 7cb17a7d..cbe9fbf2 100644
--- a/tests/test_watchlist_album_match.py
+++ b/tests/test_watchlist_album_match.py
@@ -239,3 +239,32 @@ def test_agreeing_volume_markers_still_match(spotify_name, lib_name) -> None:
     """Same volume marker should NOT block a match that other rules accept."""
     assert _albums_likely_match(spotify_name, lib_name)
 
+
+
+@pytest.mark.parametrize(
+    "spotify_name,lib_name",
+    [
+        # Decimal / multi-part volume numbers must be distinguished — the dot is
+        # stripped to a space in normalization, and grabbing only the last digit
+        # made these collapse to the same marker (Sokhi: character-song CDs).
+        ("Character CD Vol.5", "Character CD Vol.5.5"),
+        ("Character CD Vol.5.5", "Character CD Vol.4.5"),
+        ("Anime OST Vol.1.5", "Anime OST Vol.2.5"),
+        # The real CJK album names from the report.
+        ("TVアニメ「【推しの子】」キャラクターソングCD Vol.5",
+         "TVアニメ「【推しの子】」キャラクターソングCD Vol.5.5"),
+    ],
+)
+def test_decimal_volume_markers_block_match(spotify_name, lib_name) -> None:
+    assert not _albums_likely_match(spotify_name, lib_name)
+
+
+@pytest.mark.parametrize(
+    "spotify_name,lib_name",
+    [
+        ("Character CD Vol.5.5", "Character CD Vol.5.5"),       # identical decimal vol
+        ("Character CD Vol.5.5", "Character CD Vol.5.5 (Deluxe)"),
+    ],
+)
+def test_same_decimal_volume_still_matches(spotify_name, lib_name) -> None:
+    assert _albums_likely_match(spotify_name, lib_name)