diff --git a/hakuimg/blend.py b/hakuimg/blend.py
index f1bf076..86c66b0 100644
--- a/hakuimg/blend.py
+++ b/hakuimg/blend.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 from PIL import Image, ImageFilter, ImageColor
 import numpy as np
 
diff --git a/hakuimg/blur.py b/hakuimg/blur.py
index a6a9cf5..5b22413 100644
--- a/hakuimg/blur.py
+++ b/hakuimg/blur.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 from PIL import Image, ImageFilter
 
 
diff --git a/hakuimg/color.py b/hakuimg/color.py
index 4e5c123..7cc45b1 100644
--- a/hakuimg/color.py
+++ b/hakuimg/color.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 from PIL import Image, ImageEnhance
 import cv2
 import numpy as np
diff --git a/hakuimg/dither.py b/hakuimg/dither.py
index eb73248..7690b58 100644
--- a/hakuimg/dither.py
+++ b/hakuimg/dither.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 from typing import Any
 from numpy.typing import NDArray
 
@@ -28,4 +30,12 @@ def dithering(
                 new_res[i+1, j-1] += err * 3/16
             if j < d_w - 1:
                 new_res[i+1, j+1] += err * 1/16
-    return np.clip(new_res/np.max(new_res, axis=(0,1))*255, 0, 255)
\ No newline at end of file
+    return np.clip(new_res/np.max(new_res, axis=(0,1))*255, 0, 255)
+
+
+def run(
+    src,
+    k: int = 3,
+) -> tuple[Image.Image, list[list[str|float]]]:
+    def calc()
+    return Image.fromarray(result)
\ No newline at end of file
diff --git a/hakuimg/pixel.py b/hakuimg/pixel.py
index 3522d0d..7e32479 100644
--- a/hakuimg/pixel.py
+++ b/hakuimg/pixel.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 from typing import Any
 from numpy.typing import NDArray
 
diff --git a/hakuimg/sketch.py b/hakuimg/sketch.py
index 66bf655..6fe2cc0 100644
--- a/hakuimg/sketch.py
+++ b/hakuimg/sketch.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 from PIL import Image, ImageFilter, ImageEnhance, ImageColor
 import cv2
 import numpy as np
diff --git a/inoutpaint/main.py b/inoutpaint/main.py
index 152cb96..5680993 100644
--- a/inoutpaint/main.py
+++ b/inoutpaint/main.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import numpy as np
 import cv2
 from PIL import Image
diff --git a/inoutpaint/utils.py b/inoutpaint/utils.py
index 82eed63..8d67159 100644
--- a/inoutpaint/utils.py
+++ b/inoutpaint/utils.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import numpy as np
 import cv2
 from PIL import Image