diff --git a/fftcg/book.py b/fftcg/book.py
index 6dc5ba4..8b70d39 100644
--- a/fftcg/book.py
+++ b/fftcg/book.py
@@ -19,11 +19,11 @@ class Book:
 
         # all card face URLs
         urls = [
-            f"https://fftcg.cdn.sewest.net/images/cards/full/{card.code}_{language.image_suffix}.jpg"
+            ("https://fftcg.cdn.sewest.net/images/cards/full/{}_{}.jpg", str(card.code), language.image_suffix)
             for card in cards
         ]
         # card back URL
-        urls.append(CARD_BACK_URL)
+        urls.append((CARD_BACK_URL, "", ""))
 
         # multi-threaded download
         images = ImageLoader.load(urls, num_threads)
diff --git a/fftcg/imageloader.py b/fftcg/imageloader.py
index 22101a0..51f52b9 100644
--- a/fftcg/imageloader.py
+++ b/fftcg/imageloader.py
@@ -1,33 +1,46 @@
-import io
 import logging
 import multiprocessing
 
 import requests
 from PIL import Image
 
+from .language import Language
 from .utils import RESOLUTION
 
+# constants
+FALLBACK_LANGUAGE = Language("en")
+
 
 class ImageLoader:
     @classmethod
-    def _load(cls, url: str) -> Image.Image:
+    def _load_inner(cls, url_parts: tuple[str, str, str]) -> Image.Image:
         logger = logging.getLogger(__name__)
+        base_url, code, lang_suffix = url_parts
+
+        # put together image url
+        url = base_url.format(code, lang_suffix)
+        logger.info(f"trying image {url}")
 
         # fetch image (retry on fail)
         while True:
-            logger.info(f"downloading image {url}")
             try:
-                res = requests.get(url)
-                image = Image.open(io.BytesIO(res.content))
+                res = requests.get(url, stream=True)
+                break
 
-                # unify images
-                image.convert(mode="RGB")
-                return image.resize(RESOLUTION, Image.BICUBIC)
-
-            except requests.exceptions.RequestException:
+            except requests.RequestException:
                 pass
 
+        # if rejected, substitute the english version
+        if not res.status_code == 200:
+            logger.warning(f"falling back to english version of {url}")
+            return cls._load_inner((base_url, code, FALLBACK_LANGUAGE.image_suffix))
+
+        # unify images
+        image = Image.open(res.raw)
+        image.convert(mode="RGB")
+        return image.resize(RESOLUTION, Image.BICUBIC)
+
     @classmethod
-    def load(cls, urls: list[str], num_threads: int) -> list[Image.Image]:
+    def load(cls, urls_parts: list[tuple[str, str, str]], num_threads: int) -> list[Image.Image]:
         with multiprocessing.Pool(num_threads) as p:
-            return p.map(ImageLoader._load, urls)
+            return p.map(cls._load_inner, urls_parts)
diff --git a/fftcg/language.py b/fftcg/language.py
index ec15b7b..548fbe4 100644
--- a/fftcg/language.py
+++ b/fftcg/language.py
@@ -1,3 +1,6 @@
+from __future__ import annotations
+
+
 class Language:
     def __init__(self, language: str):
         language = language.lower()
@@ -15,6 +18,12 @@ class Language:
     def __str__(self):
         return self.__short
 
+    def __hash__(self) -> hash:
+        return hash(str(self))
+
+    def __eq__(self, other: Language):
+        return str(self) == str(other)
+
     @property
     def image_suffix(self):
         # supported languages for face URLs
@@ -32,4 +41,3 @@ class Language:
             return ""
         else:
             return "_EN"
-
diff --git a/fftcg/opus.py b/fftcg/opus.py
index d15828b..b768423 100644
--- a/fftcg/opus.py
+++ b/fftcg/opus.py
@@ -10,7 +10,7 @@ from .ttsdeck import TTSDeck
 
 
 class Opus(Cards):
-    __SQUARE_API_URL = "https://fftcg.square-enix-games.com/de/get-cards"
+    __SQUARE_API_URL = "https://fftcg.square-enix-games.com/en/get-cards"
 
     def __init__(self, opus_id: str, language: Language):
         logger = logging.getLogger(__name__)
@@ -64,7 +64,7 @@ class Opus(Cards):
         self.sort(key=lambda x: x.code.opus)
 
         for card in self:
-            logger.info(f"imported card {card}")
+            logger.debug(f"imported card {card}")
 
     @property
     def number(self) -> str:
diff --git a/main.py b/main.py
index 7388a3f..81ba907 100755
--- a/main.py
+++ b/main.py
@@ -47,6 +47,12 @@ def main() -> None:
         description="Imports FFTCG cards for TT-Sim.",
     )
 
+    parser.add_argument(
+        "-v", "--verbose",
+        help="increase output verbosity",
+        action="count",
+    )
+
     parser.add_argument(
         "-l", "--language",
         type=fftcg.Language,
@@ -105,12 +111,25 @@ def main() -> None:
         help="the Deck to import",
     )
 
+    # parse arguments
+    args = parser.parse_args()
+
     # set up logging
+    if args.verbose is None:
+        args.verbose = logging.WARN
+    elif args.verbose == 1:
+        args.verbose = logging.INFO
+    else:
+        args.verbose = logging.DEBUG
+
     logging.basicConfig(
-        level=logging.INFO,
+        level=args.verbose,
         format="%(levelname)s: %(processName)s %(message)s",
     )
 
+    logger = logging.getLogger(__name__)
+    logger.debug(f"{args = }")
+
     # output directory
     if not os.path.exists(OUT_DIR_NAME):
         os.mkdir(OUT_DIR_NAME)
@@ -118,13 +137,12 @@ def main() -> None:
     os.chdir(OUT_DIR_NAME)
 
     # call function based on args
-    args = parser.parse_args()
     for deck in args.func(args):
         deck.save()
 
     # bye
-    logging.info("Done. Put the generated JSON files in your 'Saved Objects' Folder.")
-    logging.info("Thanks for using fftcgtool!")
+    print("Done. Put the generated JSON files in your 'Saved Objects' Folder.")
+    print("Thanks for using fftcgtool!")
 
 
 if __name__ == "__main__":