diff --git a/various-tools/sysmes/reader.py b/various-tools/sysmes/reader.py
new file mode 100644
index 0000000..e2c80c1
--- /dev/null
+++ b/various-tools/sysmes/reader.py
@@ -0,0 +1,25 @@
+import struct
+import json
+
+def unpack_sysmes(filename, output_json):
+    with open(filename, 'rb') as f:
+        num_elements = struct.unpack('>H', f.read(2))[0] - 1
+        
+        f.read(2)
+        
+        strings = []
+        for _ in range(num_elements):
+            str_length = struct.unpack('>H', f.read(2))[0]
+            
+            string_data = f.read(str_length)
+            decoded_string = string_data.decode('utf-8', errors='replace')
+            print(decoded_string)
+            strings.append(decoded_string)
+        
+    with open(output_json, 'w', encoding='utf-8') as json_file:
+        json.dump(strings, json_file, ensure_ascii=False, indent=4)
+
+if __name__ == "__main__":
+    filename = "sysmes_it.dat"
+    output_json = "sysmes_it.json"
+    unpack_sysmes(filename, output_json)
\ No newline at end of file
diff --git a/various-tools/sysmes/readme.txt b/various-tools/sysmes/readme.txt
new file mode 100644
index 0000000..9996362
--- /dev/null
+++ b/various-tools/sysmes/readme.txt
@@ -0,0 +1,7 @@
+sysmes.dat resides in the obb/ipa package and contains the game's localization strings.
+
+reader unpacks one file from dat to json.
+
+writer packs all 4 json files to 4 dat files.
+
+Please be mindful of this.
\ No newline at end of file
diff --git a/various-tools/sysmes/writer.py b/various-tools/sysmes/writer.py
new file mode 100644
index 0000000..d89fc15
--- /dev/null
+++ b/various-tools/sysmes/writer.py
@@ -0,0 +1,44 @@
+import struct
+import json
+import os
+
+FILES = {
+    "sysmes.json": "sysmes.dat",
+    "sysmes_en.json": "sysmes_en.dat",
+    "sysmes_fr.json": "sysmes_fr.dat",
+    "sysmes_it.json": "sysmes_it.dat"
+}
+
+# Bodge - Not sure what tf is happening for the last string
+APPEND_BYTES = {
+    "sysmes.json": "",
+    "sysmes_en.json": "AF E3 81 A7 E3 81 8D E3 81 BE E3 81 9B E3 82 93 E3 80 82 0A E3 82 A2 E3 82 AB E3 82 A6 E3 83 B3 E3 83 88 E3 82 92 E5 89 8A E9 99 A4 E3 81 97 E3 81 BE E3 81 99 E3 81 8B EF BC 9F 00 03 59 65 73 00 02 4E 6F 00 27 E3 82 A2 E3 82 AB E3 82 A6 E3 83 B3 E3 83 88 E3 82 92 E5 89 8A E9 99 A4 E3 81 97 E3 81 BE E3 81 97 E3 81 9F E3 80 82",
+    "sysmes_fr.json": "61 20 C3 A9 74 C3 A9 20 73 75 70 70 72 69 6D C3 A9 2E",
+    "sysmes_it.json": "83 88 E3 82 92 E5 89 8A E9 99 A4 E3 81 97 E3 81 BE E3 81 97 E3 81 9F E3 80 82"
+}
+
+def parse_hex_string(hex_string):
+    return bytes.fromhex(hex_string)
+
+def pack_sysmes(input_json, output_filename, append_bytes):
+    with open(input_json, 'r', encoding='utf-8') as json_file:
+        strings = json.load(json_file)
+
+    with open(output_filename, 'wb') as f:
+        f.write(struct.pack('>H', len(strings) + 1))  # Bodge, last string is fucced
+        f.write(b'\x00\x00')
+
+        for string in strings:
+            encoded_string = string.encode('utf-8')
+            f.write(struct.pack('>H', len(encoded_string)))
+            f.write(encoded_string)
+
+        f.write(parse_hex_string(append_bytes))
+
+if __name__ == "__main__":
+    for json_file, dat_file in FILES.items():
+        if os.path.exists(json_file):
+            print(f"Processing {json_file} → {dat_file}")
+            pack_sysmes(json_file, dat_file, APPEND_BYTES[json_file])
+        else:
+            print(f"Warning: {json_file} not found, skipped.")