diff --git a/ecs/crm-datafetch/Pipfile b/ecs/crm-datafetch/Pipfile
index 82796598..6912e1a0 100644
--- a/ecs/crm-datafetch/Pipfile
+++ b/ecs/crm-datafetch/Pipfile
@@ -7,6 +7,7 @@ name = "pypi"
 test = "pytest tests/"
 "test:cov" = "pytest --cov=src --cov-branch --cov-report=term-missing tests/"
 "test:report" = "pytest --cov=src --cov-branch --cov-report=term-missing --html=.report/test_result.html tests/"
+"test:walk-through" = "pytest tests/ --walk-through"
 
 [packages]
 boto3 = "*"
diff --git a/ecs/crm-datafetch/tests/conftest.py b/ecs/crm-datafetch/tests/conftest.py
index 55ade88c..b86b29d9 100644
--- a/ecs/crm-datafetch/tests/conftest.py
+++ b/ecs/crm-datafetch/tests/conftest.py
@@ -57,3 +57,23 @@ def pytest_runtest_makereport(item, call):
     report.cases = docstring.get("Cases", '')  # 「テスト内容」を`report`に追加
     report.arranges = docstring.get("Arranges", '')  # 「準備作業」を`report`に追加
     report.expects = docstring.get("Expects", '')  # 「期待結果」を`report`に追加
+
+
+def pytest_addoption(parser):
+    parser.addoption(
+        "--walk-through", action="store_true", default=False, help="run walk through tests"
+    )
+
+
+def pytest_configure(config):
+    config.addinivalue_line("markers", "slow: mark test as slow to run")
+
+
+def pytest_collection_modifyitems(config, items):
+    skip_slow = pytest.mark.skip(reason="need --walk-through option to run")
+    if config.getoption("--walk-through"):
+        [item.add_marker(skip_slow) for item in items if "walk_through" not in item.keywords]
+        return
+    for item in items:
+        if "walk_through" in item.keywords:
+            item.add_marker(skip_slow)
diff --git a/ecs/crm-datafetch/tests/test_walkthrough.py b/ecs/crm-datafetch/tests/test_walkthrough.py
new file mode 100644
index 00000000..2a3b09f2
--- /dev/null
+++ b/ecs/crm-datafetch/tests/test_walkthrough.py
@@ -0,0 +1,7 @@
+import pytest
+
+
+@pytest.mark.walk_through
+def test_walk_through():
+    assert 0
+    pass