diff --git a/optuna_dashboard/_storage.py b/optuna_dashboard/_storage.py
index ecf9c237..803aabd4 100644
--- a/optuna_dashboard/_storage.py
+++ b/optuna_dashboard/_storage.py
@@ -59,13 +59,6 @@ def get_trials(storage: BaseStorage, study_id: int) -> list[FrozenTrial]:
     return trials
 
 
-def get_trial(storage: BaseStorage, study_id: int, trial_id: int) -> FrozenTrial | None:
-    for trial in get_trials(storage, study_id):
-        if trial._trial_id == trial_id:
-            return trial
-    return None
-
-
 def get_study_summaries(storage: BaseStorage) -> list[StudySummary]:
     if version.parse(optuna_ver) >= version.Version("3.0.0rc0.dev"):
         frozen_studies = storage.get_all_studies()  # type: ignore
diff --git a/optuna_dashboard/artifact/_backend.py b/optuna_dashboard/artifact/_backend.py
index 71ea38c7..63ae8fb8 100644
--- a/optuna_dashboard/artifact/_backend.py
+++ b/optuna_dashboard/artifact/_backend.py
@@ -18,7 +18,6 @@ from optuna.trial import FrozenTrial
 
 from .._bottle_util import json_api_view
 from .._bottle_util import parse_data_uri
-from .._storage import get_trial
 
 
 if TYPE_CHECKING:
@@ -106,7 +105,7 @@ def register_artifact_route(
         storage.set_study_system_attr(study_id, attr_key, json.dumps(artifact))
         response.status = 201
 
-        trial = get_trial(storage, study_id, trial_id)
+        trial = storage.get_trial(trial_id)
         if trial is None:
             response.status = 400
             return {"reason": "Invalid study_id or trial_id"}
diff --git a/python_tests/artifact/test_optuna_compatibility.py b/python_tests/artifact/test_optuna_compatibility.py
new file mode 100644
index 00000000..a7bb5bf0
--- /dev/null
+++ b/python_tests/artifact/test_optuna_compatibility.py
@@ -0,0 +1,42 @@
+from __future__ import annotations
+
+import tempfile
+
+import optuna
+from optuna.version import __version__ as optuna_ver
+from optuna_dashboard.artifact._backend import list_trial_artifacts
+from packaging import version
+import pytest
+
+
+@pytest.mark.skipIf(
+    version.parse(optuna_ver) < version.Version("3.3.0.dev"),
+    "Artifact is not implemented yet in Optuna",
+)
+def test_list_optuna_artifacts() -> None:
+    from optuna.artifacts import FileSystemArtifactStore
+    from optuna.artifacts import upload_artifact
+
+    storage = optuna.storages.InMemoryStorage()
+    study = optuna.create_study(storage=storage)
+    dummy_content = b"dummy content"
+
+    with tempfile.TemporaryDirectory() as tmpdir:
+        artifact_store = FileSystemArtifactStore(tmpdir)
+        trial = study.ask()
+
+        with tempfile.NamedTemporaryFile() as f:
+            f.write(dummy_content)
+            f.flush()
+            upload_artifact(trial, f.name, artifact_store=artifact_store)
+
+        study.tell(trial, 0.0)
+
+        study_system_attrs = storage.get_study_system_attrs(study._study_id)
+        trial = storage.get_trial(trial._trial_id)
+        artifact_meta_list = list_trial_artifacts(study_system_attrs, trial)
+        assert len(artifact_meta_list) == 1
+
+        artifact_id = artifact_meta_list[0]["artifact_id"]
+        with artifact_store.open_reader(artifact_id) as reader:
+            assert reader.read() == dummy_content
\ No newline at end of file