diff --git a/heftia-effects/heftia-effects.cabal b/heftia-effects/heftia-effects.cabal
index 9185d7c..6ee9d99 100644
--- a/heftia-effects/heftia-effects.cabal
+++ b/heftia-effects/heftia-effects.cabal
@@ -70,6 +70,8 @@ library
         Control.Effect.Handler.Heftia.Except
         Control.Effect.Handler.Heftia.ShiftReset
         Control.Effect.Handler.Heftia.Coroutine
+        Control.Effect.Handler.Heftia.Input
+        Control.Effect.Handler.Heftia.Output
         Control.Effect.Handler.Heftia.Provider
         Control.Effect.Handler.Heftia.Provider.Implicit
         Control.Effect.Handler.Heftia.Resource
diff --git a/heftia-effects/src/Control/Effect/Handler/Heftia/Input.hs b/heftia-effects/src/Control/Effect/Handler/Heftia/Input.hs
new file mode 100644
index 0000000..1ac6448
--- /dev/null
+++ b/heftia-effects/src/Control/Effect/Handler/Heftia/Input.hs
@@ -0,0 +1,55 @@
+-- This Source Code Form is subject to the terms of the Mozilla Public
+-- License, v. 2.0. If a copy of the MPL was not distributed with this
+-- file, You can obtain one at https://mozilla.org/MPL/2.0/.
+
+{- |
+Copyright   :  (c) 2024 Yamada Ryo
+License     :  MPL-2.0 (see the file LICENSE)
+Maintainer  :  ymdfield@outlook.jp
+Stability   :  experimental
+Portability :  portable
+-}
+module Control.Effect.Handler.Heftia.Input where
+import Control.Freer (Freer)
+import Data.Hefty.Union (Union (HasMembership))
+import Control.Effect.Hefty (Eff, interpret, interpretRec, raiseUnder)
+import Data.Effect.HFunctor (HFunctor)
+import Data.Effect.Input (Input(Input), LInput)
+import Control.Effect (type (~>))
+import Control.Arrow ((>>>))
+import Control.Effect.Handler.Heftia.State (evalState)
+import Control.Monad.State (StateT)
+import Data.Effect.State (LState, gets, put)
+import Data.List (uncons)
+
+runInputEff ::
+    forall i r eh fr u c.
+    (Freer c fr, Union u, Applicative (Eff u fr eh r), HFunctor (u eh)) =>
+    Eff u fr eh r i -> Eff u fr eh (LInput i ': r) ~> Eff u fr eh r
+runInputEff a = interpretRec \Input -> a
+{-# INLINE runInputEff #-}
+
+runInputConst ::
+    forall i r eh fr u c.
+    (Freer c fr, Union u, Applicative (Eff u fr eh r), HFunctor (u eh)) =>
+    i -> Eff u fr eh (LInput i ': r) ~> Eff u fr eh r
+runInputConst i = interpretRec \Input -> pure i
+{-# INLINE runInputConst #-}
+
+runInputList ::
+    forall i r fr u c.
+    ( Freer c fr, Union u
+    , Applicative (Eff u fr '[] r), Monad (Eff u fr '[] (LState [i] ': r))
+    , c (Eff u fr '[] r), c (StateT [i] (Eff u fr '[] r))
+    , HasMembership u (LState [i]) (LState [i] ': r)
+    , HFunctor (u '[])
+    ) =>
+    [i] -> Eff u fr '[] (LInput (Maybe i) ': r) ~> Eff u fr '[] r
+runInputList is =
+        raiseUnder
+    >>> ( interpret \Input -> do
+            is' <- gets @[i] uncons
+            mapM_ (put . snd) is'
+            pure $ fst <$> is'
+        )
+    >>> evalState is
diff --git a/heftia-effects/src/Control/Effect/Handler/Heftia/Output.hs b/heftia-effects/src/Control/Effect/Handler/Heftia/Output.hs
new file mode 100644
index 0000000..2c26ffd
--- /dev/null
+++ b/heftia-effects/src/Control/Effect/Handler/Heftia/Output.hs
@@ -0,0 +1,12 @@
+-- This Source Code Form is subject to the terms of the Mozilla Public
+-- License, v. 2.0. If a copy of the MPL was not distributed with this
+-- file, You can obtain one at https://mozilla.org/MPL/2.0/.
+
+{- |
+Copyright   :  (c) 2024 Yamada Ryo
+License     :  MPL-2.0 (see the file LICENSE)
+Maintainer  :  ymdfield@outlook.jp
+Stability   :  experimental
+Portability :  portable
+-}
+module Control.Effect.Handler.Heftia.Output where
diff --git a/heftia-effects/src/Control/Effect/Handler/Heftia/Unlift.hs b/heftia-effects/src/Control/Effect/Handler/Heftia/Unlift.hs
index 9262815..5d0c315 100644
--- a/heftia-effects/src/Control/Effect/Handler/Heftia/Unlift.hs
+++ b/heftia-effects/src/Control/Effect/Handler/Heftia/Unlift.hs
@@ -2,6 +2,13 @@
 -- License, v. 2.0. If a copy of the MPL was not distributed with this
 -- file, You can obtain one at https://mozilla.org/MPL/2.0/.
 
+{- |
+Copyright   :  (c) 2024 Yamada Ryo
+License     :  MPL-2.0 (see the file LICENSE)
+Maintainer  :  ymdfield@outlook.jp
+Stability   :  experimental
+Portability :  portable
+-}
 module Control.Effect.Handler.Heftia.Unlift where
 
 import Control.Freer (Freer)