diff --git a/arclet/entari/__init__.py b/arclet/entari/__init__.py
index 48c12e6..ed09f27 100644
--- a/arclet/entari/__init__.py
+++ b/arclet/entari/__init__.py
@@ -48,6 +48,7 @@
 from .plugin import Plugin as Plugin
 from .plugin import PluginMetadata as PluginMetadata
 from .plugin import dispose as dispose_plugin  # noqa: F401
+from .plugin import keeping as keeping
 from .plugin import load_plugin as load_plugin
 from .plugin import load_plugins as load_plugins
 from .plugin import metadata as metadata
diff --git a/arclet/entari/command/__init__.py b/arclet/entari/command/__init__.py
index e0c906b..0d4088e 100644
--- a/arclet/entari/command/__init__.py
+++ b/arclet/entari/command/__init__.py
@@ -12,8 +12,8 @@
     config,
     output_manager,
 )
-from arclet.alconna.typing import TAValue
 from arclet.alconna.tools.construct import AlconnaString, alconna_from_format
+from arclet.alconna.typing import TAValue
 from arclet.letoderea import BaseAuxiliary, Provider, Publisher, Scope, Subscriber
 from arclet.letoderea.handler import depend_handler
 from arclet.letoderea.provider import ProviderFactory
diff --git a/arclet/entari/event.py b/arclet/entari/event.py
index ced0358..e65b002 100644
--- a/arclet/entari/event.py
+++ b/arclet/entari/event.py
@@ -1,7 +1,7 @@
 from __future__ import annotations
 
 from datetime import datetime
-from typing import Callable, ClassVar, TypeVar, Generic, Any
+from typing import Any, Callable, ClassVar, Generic, TypeVar
 
 from arclet.letoderea import Contexts, Param, Provider
 from satori import ArgvInteraction, ButtonInteraction, Channel
@@ -31,7 +31,7 @@ def __get__(self, instance: Event, owner: type[Event]) -> T:
 
     def __set__(self, instance: Event, value):
         raise AttributeError("can't set attribute")
-    
+
 
 def attr(key: str | None = None) -> Any:
     return Attr(key)
@@ -67,7 +67,18 @@ async def gather(self, context: Contexts):
         context["$account"] = self.account
         context["$origin_event"] = self._origin
 
-        for attrname in {"argv", "button", "channel", "guild", "login", "member", "message", "operator", "role", "user"}:
+        for attrname in {
+            "argv",
+            "button",
+            "channel",
+            "guild",
+            "login",
+            "member",
+            "message",
+            "operator",
+            "role",
+            "user",
+        }:
             value = getattr(self, attrname)
             if value is not None:
                 context["$message_origin" if attrname == "message" else attrname] = value
diff --git a/arclet/entari/plugin/__init__.py b/arclet/entari/plugin/__init__.py
index e89b143..9c37346 100644
--- a/arclet/entari/plugin/__init__.py
+++ b/arclet/entari/plugin/__init__.py
@@ -8,9 +8,10 @@
 from loguru import logger
 from tarina import init_spec
 
-from .model import Plugin, RegisterNotInPluginError
+from .model import Plugin
 from .model import PluginMetadata as PluginMetadata
-from .model import _current_plugin
+from .model import RegisterNotInPluginError, _current_plugin
+from .model import keeping as keeping
 from .module import import_plugin
 from .module import package as package
 from .service import service
@@ -40,6 +41,7 @@ def load_plugin(path: str) -> Plugin | None:
             logger.error(f"cannot found plugin {path!r}")
             return
         logger.success(f"loaded plugin {path!r}")
+
         return mod.__plugin__
     except RegisterNotInPluginError as e:
         logger.exception(f"{e.args[0]}", exc_info=e)
diff --git a/arclet/entari/plugin/model.py b/arclet/entari/plugin/model.py
index e066b33..be3f89c 100644
--- a/arclet/entari/plugin/model.py
+++ b/arclet/entari/plugin/model.py
@@ -4,14 +4,13 @@
 from contextvars import ContextVar
 from dataclasses import dataclass, field
 from types import ModuleType
-from typing import TYPE_CHECKING, Any, Callable
+from typing import TYPE_CHECKING, Any, Callable, TypeVar
 from weakref import finalize
 
 from arclet.letoderea import BaseAuxiliary, Provider, Publisher, StepOut, system_ctx
 from arclet.letoderea.builtin.breakpoint import R
 from arclet.letoderea.typing import TTarget
 from satori.client import Account
-from tarina import init_spec
 
 from .service import service
 
@@ -66,6 +65,7 @@ def dispose(self):
     if TYPE_CHECKING:
         register = Publisher.register
     else:
+
         def register(self, *args, **kwargs):
             wrapper = super().register(*args, **kwargs)
 
@@ -144,6 +144,8 @@ def metadata(self) -> PluginMetadata | None:
 
     def __post_init__(self):
         service.plugins[self.id] = self
+        if self.id not in service._keep_values:
+            service._keep_values[self.id] = {}
         finalize(self, self.dispose)
 
     def dispose(self):
@@ -169,6 +171,34 @@ def validate(self, func):
             if "__plugin__" in func.__globals__ and func.__globals__["__plugin__"] is self:
                 return
             raise RegisterNotInPluginError(
-                f"Handler {func.__qualname__} should define in the same module as the plugin: {self.module.__name__}. "
-                f"Please use the `load_plugin({func.__module__!r})` or `package({func.__module__!r})` before import it."
+                f"Handler {func.__qualname__} should define "
+                f"in the same module as the plugin: {self.module.__name__}. "
+                f"Please use the `load_plugin({func.__module__!r})` or "
+                f"`package({func.__module__!r})` before import it."
             )
+
+
+class KeepingVariable:
+    def __init__(self, obj: T, dispose: Callable[[T], None] | None = None):
+        self.obj = obj
+        self._dispose = dispose
+
+    def dispose(self):
+        if hasattr(self.obj, "dispose"):
+            self.obj.dispose()  # type: ignore
+        elif self._dispose:
+            self._dispose(self.obj)
+        del self.obj
+
+
+T = TypeVar("T")
+
+
+def keeping(id_: str, obj: T, dispose: Callable[[T], None] | None = None) -> T:
+    if not (plug := _current_plugin.get(None)):
+        raise LookupError("no plugin context found")
+    if id_ not in service._keep_values[plug.id]:
+        service._keep_values[plug.id][id_] = KeepingVariable(obj, dispose)
+    else:
+        obj = service._keep_values[plug.id][id_].obj  # type: ignore
+    return obj
diff --git a/arclet/entari/plugin/module.py b/arclet/entari/plugin/module.py
index 1230ce9..9af5f81 100644
--- a/arclet/entari/plugin/module.py
+++ b/arclet/entari/plugin/module.py
@@ -9,7 +9,6 @@
 from .model import Plugin, PluginMetadata, _current_plugin
 from .service import service
 
-
 _SUBMODULE_WAITLIST = set()
 
 
diff --git a/arclet/entari/plugin/service.py b/arclet/entari/plugin/service.py
index 553eccf..617184c 100644
--- a/arclet/entari/plugin/service.py
+++ b/arclet/entari/plugin/service.py
@@ -6,17 +6,19 @@
 from loguru import logger
 
 if TYPE_CHECKING:
-    from .model import Plugin
+    from .model import KeepingVariable, Plugin
 
 
 class PluginService(Service):
     id = "arclet.entari.plugin_service"
 
     plugins: dict[str, "Plugin"]
+    _keep_values: dict[str, dict[str, "KeepingVariable"]]
 
     def __init__(self):
         super().__init__()
         self.plugins = {}
+        self._keep_values = {}
 
     @property
     def required(self) -> set[str]:
@@ -46,6 +48,11 @@ async def launch(self, manager: Launart):
             except Exception as e:
                 logger.error(f"failed to dispose plugin {plug.id} caused by {e!r}")
                 self.plugins.pop(plug_id, None)
+        for values in self._keep_values.values():
+            for value in values.values():
+                value.dispose()
+            values.clear()
+        self._keep_values.clear()
 
 
 service = PluginService()
diff --git a/arclet/entari/session.py b/arclet/entari/session.py
index 13936d8..d50fc18 100644
--- a/arclet/entari/session.py
+++ b/arclet/entari/session.py
@@ -120,7 +120,9 @@ async def send(
     ) -> list[MessageObject]:
         if not protocol_cls:
             return await self.account.protocol.send(self.context, message)
-        return await self.account.custom(self.account.config, protocol_cls).send(self.context._origin, message)
+        return await self.account.custom(self.account.config, protocol_cls).send(
+            self.context._origin, message
+        )
 
     async def send_message(
         self,
@@ -269,7 +271,9 @@ async def guild_member_role_unset(self, role_id: str, user_id: str | None = None
         if not self.context.guild:
             raise RuntimeError("Event cannot use to guild member role unset!")
         if user_id:
-            return await self.account.protocol.guild_member_role_unset(self.context.guild.id, user_id, role_id)
+            return await self.account.protocol.guild_member_role_unset(
+                self.context.guild.id, user_id, role_id
+            )
         if not self.context.user:
             raise RuntimeError("Event cannot use to guild member role unset!")
         return await self.account.protocol.guild_member_role_unset(
diff --git a/example_plugin.py b/example_plugin.py
index 53d849f..c2a312f 100644
--- a/example_plugin.py
+++ b/example_plugin.py
@@ -11,6 +11,7 @@
     is_public_message,
     bind,
     metadata,
+    keeping
 )
 from arclet.entari.command import Match
 
@@ -70,3 +71,17 @@ async def _(content: Match[MessageChain], session: Session):
 @command.on("add {a} {b}")
 async def add(a: int, b: int, session: Session):
     await session.send_message(f"{a + b =}")
+
+
+kept_data = keeping("foo", [], lambda x: x.clear())
+
+
+@command.on("append {data}")
+async def append(data: str, session: Session):
+    kept_data.append(data)
+    await session.send_message(f"Appended {data}")
+
+
+@command.on("show")
+async def show(session: Session):
+    await session.send_message(f"Data: {kept_data}")