diff --git a/genshin/client/components/chronicle/starrail.py b/genshin/client/components/chronicle/starrail.py
index b1935341..4abc7757 100644
--- a/genshin/client/components/chronicle/starrail.py
+++ b/genshin/client/components/chronicle/starrail.py
@@ -138,4 +138,17 @@ async def get_starrail_pure_fiction(
         """Get starrail pure fiction runs."""
         payload = dict(schedule_type=2 if previous else 1, need_all="true")
         data = await self._request_starrail_record("challenge_story", uid, lang=lang, payload=payload)
+
+        # In "groups", it contains time data from both the current season and previous season.
+        data = dict(data)
+        time = data["groups"][0]
+        if previous is True and len(data["groups"]) > 1:
+            time = data["groups"][1]
+
+        # Extract the time data.
+        data["schedule_id"] = time["schedule_id"]
+        data["begin_time"] = time["begin_time"]
+        data["end_time"] = time["end_time"]
+        data["name_mi18n"] = time["name_mi18n"]
+
         return models.StarRailPureFiction(**data)
diff --git a/genshin/models/starrail/chronicle/challenge.py b/genshin/models/starrail/chronicle/challenge.py
index d71f2ee2..70fef2b9 100644
--- a/genshin/models/starrail/chronicle/challenge.py
+++ b/genshin/models/starrail/chronicle/challenge.py
@@ -1,14 +1,6 @@
 """Starrail chronicle challenge."""
 
-from typing import TYPE_CHECKING, Any, Dict, List, Optional
-
-if TYPE_CHECKING:
-    import pydantic.v1 as pydantic
-else:
-    try:
-        import pydantic.v1 as pydantic
-    except ImportError:
-        import pydantic
+from typing import List, Optional
 
 from genshin.models.model import Aliased, APIModel
 from genshin.models.starrail.character import FloorCharacter
@@ -95,10 +87,10 @@ def score(self) -> int:
 class StarRailPureFiction(APIModel):
     """Pure Fiction challenge in a season."""
 
-    name: str
-    season_id: int
+    season_id: int = Aliased("schedule_id")
     begin_time: PartialTime
     end_time: PartialTime
+    name: str = Aliased("name_mi18n")
 
     total_stars: int = Aliased("star_num")
     max_floor: str
@@ -107,15 +99,3 @@ class StarRailPureFiction(APIModel):
 
     floors: List[FictionFloor] = Aliased("all_floor_detail")
     max_floor_id: int
-
-    @pydantic.root_validator(pre=True)
-    def __unnest_groups(cls, values: Dict[str, Any]) -> Dict[str, Any]:
-        if "groups" in values and isinstance(values["groups"], List):
-            groups: List[Dict[str, Any]] = values["groups"]
-            if len(groups) > 0:
-                values["name"] = groups[0]["name_mi18n"]
-                values["season_id"] = groups[0]["schedule_id"]
-                values["begin_time"] = groups[0]["begin_time"]
-                values["end_time"] = groups[0]["end_time"]
-
-        return values