diff --git a/cbz/comic.py b/cbz/comic.py
index 8a4d02c..7e395f4 100644
--- a/cbz/comic.py
+++ b/cbz/comic.py
@@ -10,7 +10,7 @@ from langcodes import Language
 from pathlib import Path
 
 from cbz import utils
-from cbz.constants import YesNo, Manga, AgeRating, Format
+from cbz.constants import YesNo, Manga, AgeRating, Format, xml_name
 from cbz.page import PageInfo
 
 
@@ -30,50 +30,50 @@ class ComicInfo:
     def __init__(self, pages: [PageInfo], **kwargs):
         self.__pages = pages
         self.__info = {
-            'Title': str(kwargs.get('title', '')),
-            'Series': str(kwargs.get('series', '')),
-            'Number': str(kwargs.get('number', '')),
-            'Count': int(kwargs.get('count', -1)),
-            'Volume': int(kwargs.get('volume', -1)),
-            'AlternateSeries': str(kwargs.get('alternate_series', '')),
-            'AlternateNumber': str(kwargs.get('alternate_number', '')),
-            'AlternateCount': int(kwargs.get('alternate_count', -1)),
-            'Summary': str(kwargs.get('summary', '')),
-            'Notes': str(kwargs.get('notes', '')),
-            'Year': int(kwargs.get('year', -1)),
-            'Month': int(kwargs.get('month', -1)),
-            'Day': int(kwargs.get('day', -1)),
-            'Writer': str(kwargs.get('writer', '')),
-            'Penciller': str(kwargs.get('penciller', '')),
-            'Inker': str(kwargs.get('inker', '')),
-            'Colorist': str(kwargs.get('colorist', '')),
-            'Letterer': str(kwargs.get('letterer', '')),
-            'CoverArtist': str(kwargs.get('cover_artist', '')),
-            'Editor': str(kwargs.get('editor', '')),
-            'Translator': str(kwargs.get('translator', '')),
-            'Publisher': str(kwargs.get('publisher', '')),
-            'Imprint': str(kwargs.get('imprint', '')),
-            'Genre': str(kwargs.get('genre', '')),
-            'Tags': str(kwargs.get('tags', '')),
-            'Web': str(kwargs.get('web', '')),
+            'Title': str(kwargs.get('title', kwargs.get('Title', ''))),
+            'Series': str(kwargs.get('series', kwargs.get('Series', ''))),
+            'Number': str(kwargs.get('number', kwargs.get('Number', ''))),
+            'Count': int(kwargs.get('count', kwargs.get('Count', -1))),
+            'Volume': int(kwargs.get('volume', kwargs.get('Volume', -1))),
+            'AlternateSeries': str(kwargs.get('alternate_series', kwargs.get('AlternateSeries', ''))),
+            'AlternateNumber': str(kwargs.get('alternate_number', kwargs.get('AlternateNumber', ''))),
+            'AlternateCount': int(kwargs.get('alternate_count', kwargs.get('AlternateCount', -1))),
+            'Summary': str(kwargs.get('summary', kwargs.get('Summary', ''))),
+            'Notes': str(kwargs.get('notes', kwargs.get('Notes', ''))),
+            'Year': int(kwargs.get('year', kwargs.get('Year', -1))),
+            'Month': int(kwargs.get('month', kwargs.get('Month', -1))),
+            'Day': int(kwargs.get('day', kwargs.get('Day', -1))),
+            'Writer': str(kwargs.get('writer', kwargs.get('Writer', ''))),
+            'Penciller': str(kwargs.get('penciller', kwargs.get('Penciller', ''))),
+            'Inker': str(kwargs.get('inker', kwargs.get('Inker', ''))),
+            'Colorist': str(kwargs.get('colorist', kwargs.get('Colorist', ''))),
+            'Letterer': str(kwargs.get('letterer', kwargs.get('Letterer', ''))),
+            'CoverArtist': str(kwargs.get('cover_artist', kwargs.get('CoverArtist', ''))),
+            'Editor': str(kwargs.get('editor', kwargs.get('Editor', ''))),
+            'Translator': str(kwargs.get('translator', kwargs.get('Translator', ''))),
+            'Publisher': str(kwargs.get('publisher', kwargs.get('Publisher', ''))),
+            'Imprint': str(kwargs.get('imprint', kwargs.get('imprint', 'Imprint'))),
+            'Genre': str(kwargs.get('genre', kwargs.get('Genre', ''))),
+            'Tags': str(kwargs.get('tags', kwargs.get('Tags', ''))),
+            'Web': str(kwargs.get('web', kwargs.get('Web', ''))),
             'PageCount': len(self.__pages),
-            'LanguageISO': language(kwargs.get('language_iso', '')),
-            'Format': Format(kwargs.get('format', Format.UNKNOWN)),
-            'EAN': str(kwargs.get('ean', '')),
-            'BlackAndWhite': YesNo(kwargs.get('black_white', YesNo.UNKNOWN)),
-            'Manga': Manga(kwargs.get('manga', Manga.UNKNOWN)),
-            'Characters': str(kwargs.get('characters', '')),
-            'Teams': str(kwargs.get('teams', '')),
-            'Locations': str(kwargs.get('locations', '')),
-            'ScanInformation': str(kwargs.get('scan_information', '')),
-            'StoryArc': str(kwargs.get('story_arc', '')),
-            'StoryArcNumber': str(kwargs.get('story_arc_number', '')),
-            'SeriesGroup': str(kwargs.get('series_group', '')),
-            'AgeRating': AgeRating(kwargs.get('age_rating', AgeRating.UNKNOWN)),
+            'LanguageISO': language(kwargs.get('language_iso', kwargs.get('LanguageISO', ''))),
+            'Format': Format(kwargs.get('format', kwargs.get('Format', Format.UNKNOWN))),
+            'EAN': str(kwargs.get('ean', kwargs.get('EAN', ''))),
+            'BlackAndWhite': YesNo(kwargs.get('black_white', kwargs.get('BlackAndWhite', YesNo.UNKNOWN))),
+            'Manga': Manga(kwargs.get('manga', kwargs.get('Manga', Manga.UNKNOWN))),
+            'Characters': str(kwargs.get('characters', kwargs.get('Characters', ''))),
+            'Teams': str(kwargs.get('teams', kwargs.get('Teams', ''))),
+            'Locations': str(kwargs.get('locations', kwargs.get('Locations', ''))),
+            'ScanInformation': str(kwargs.get('scan_information', kwargs.get('ScanInformation', ''))),
+            'StoryArc': str(kwargs.get('story_arc', kwargs.get('StoryArc', ''))),
+            'StoryArcNumber': str(kwargs.get('story_arc_number', kwargs.get('StoryArcNumber', ''))),
+            'SeriesGroup': str(kwargs.get('series_group', kwargs.get('series_group', ''))),
+            'AgeRating': AgeRating(kwargs.get('age_rating', kwargs.get('AgeRating', AgeRating.UNKNOWN))),
             'Pages': [{'Image': i, **page.dumps()} for i, page in enumerate(pages)],
-            'CommunityRating': rating(kwargs.get('community_rating', -1)),
-            'MainCharacterOrTeam': str(kwargs.get('main_character_or_team', '')),
-            'Review': str(kwargs.get('review', ''))
+            'CommunityRating': rating(kwargs.get('community_rating', kwargs.get('CommunityRating', -1))),
+            'MainCharacterOrTeam': str(kwargs.get('main_character_or_team', kwargs.get('MainCharacterOrTeam', ''))),
+            'Review': str(kwargs.get('review', kwargs.get('Review', '')))
         }
 
     def dumps(self) -> dict:
@@ -90,17 +90,29 @@ class ComicInfo:
     def from_cbz(cls, path: Union[Path, str]) -> ComicInfo:
         if not isinstance(path, (Path, str)):
             raise ValueError(f'Expecting Path object or path string, got {path!r}')
-        with Path(path).open(mode='rb') as f:
-            return cls(cls.__unpack(f.read()))
+        return cls(**cls.__unpack(Path(path)))
 
-    def __unpack(self, data: bytes) -> tuple[[PageInfo], dict]:
-        raise NotImplemented
+    @staticmethod
+    def __unpack(file_path: Path) -> dict:
+        with zipfile.ZipFile(file_path, 'r', zipfile.ZIP_STORED) as zip_file:
+            _files = zip_file.namelist()
+            assert xml_name in _files, f"{xml_name} not found in: {zip_file.filename}"
+            xml_file = zip_file.open(xml_name)
+            info = xmltodict.parse(xml_file.read()).get("ComicInfo")
+            xml_file.close()
+            _files.remove(xml_name)
+            info["pages"] = list()
+            for filename in _files:
+                page_file = zip_file.open(filename)
+                info["pages"].append(PageInfo.loads(page_file.read()))
+                page_file.close()
+        return info
 
     def pack(self) -> bytes:
         zip_buffer = BytesIO()
         with zipfile.ZipFile(zip_buffer, 'w', zipfile.ZIP_STORED) as zip_file:
             zip_file.writestr(
-                'ComicInfo.xml',
+                xml_name,
                 xmltodict.unparse({'ComicInfo': self.dumps()}, pretty=True).encode('utf-8')
             )
 
diff --git a/cbz/constants.py b/cbz/constants.py
index 4060b13..91b0991 100644
--- a/cbz/constants.py
+++ b/cbz/constants.py
@@ -1,5 +1,7 @@
 from enum import Enum
 
+xml_name = "ComicInfo.xml"
+
 
 class YesNo(Enum):
     UNKNOWN = 'Unknown'