diff --git a/backend/infrastructure/persistence/article.go b/backend/infrastructure/persistence/article.go
index 2a2e4a26..f6f41f15 100644
--- a/backend/infrastructure/persistence/article.go
+++ b/backend/infrastructure/persistence/article.go
@@ -27,7 +27,7 @@ func (ap *articlePersistence) FindByID(article *model.Article) error {
 		Joins("User").
 		Joins("Category").
 		Preload("Tags").
-		Find(article).
+		First(article).
 		Error
 }
 
diff --git a/backend/interfaces/api/handler/article.go b/backend/interfaces/api/handler/article.go
index 41539d2a..cb328b78 100644
--- a/backend/interfaces/api/handler/article.go
+++ b/backend/interfaces/api/handler/article.go
@@ -7,6 +7,7 @@ import (
 	"github.com/gorilla/mux"
 	"github.com/yoshihiro-shu/draft-backend/backend/application/usecase"
 	"github.com/yoshihiro-shu/draft-backend/backend/interfaces/api/request"
+	"gorm.io/gorm"
 )
 
 type ArticleHandler interface {
@@ -41,8 +42,10 @@ func (ah *articleHandler) Get(w http.ResponseWriter, r *http.Request) error {
 	}
 
 	article, err := ah.articleUseCase.FindByID(id)
-	// TODO not no rows error
 	if err != nil {
+		if err == gorm.ErrRecordNotFound {
+			return ah.C.JSON(w, http.StatusNotFound, err.Error())
+		}
 		return ah.C.JSON(w, http.StatusInternalServerError, err.Error())
 	}
 
diff --git a/backend/interfaces/api/handler/command.go b/backend/interfaces/api/handler/command.go
deleted file mode 100644
index 4708a596..00000000
--- a/backend/interfaces/api/handler/command.go
+++ /dev/null
@@ -1,19 +0,0 @@
-package handler
-
-import (
-	"bytes"
-	"net/http"
-	"os/exec"
-)
-
-func (h indexHandler) Command(w http.ResponseWriter, r *http.Request) error {
-	cmd := exec.Command("pwd")
-	var out bytes.Buffer
-	cmd.Stdout = &out
-	err := cmd.Run()
-	if err != nil {
-		return h.JSON(w, http.StatusOK, err.Error())
-	}
-
-	return h.JSON(w, http.StatusOK, out.String())
-}
diff --git a/backend/interfaces/api/handler/index.go b/backend/interfaces/api/handler/index.go
index 9bc10faf..a15aa700 100644
--- a/backend/interfaces/api/handler/index.go
+++ b/backend/interfaces/api/handler/index.go
@@ -1,10 +1,8 @@
 package handler
 
 import (
-	"fmt"
 	"net/http"
 
-	"github.com/gorilla/mux"
 	"github.com/yoshihiro-shu/draft-backend/backend/interfaces/api/request"
 )
 
@@ -20,57 +18,11 @@ type TestRedis struct {
 func (h indexHandler) Index(w http.ResponseWriter, r *http.Request) error {
 	return h.JSON(w, http.StatusOK, "HELLO WORLD")
 }
-
-func (h indexHandler) TestHandler(w http.ResponseWriter, r *http.Request) error {
-	fmt.Println("UNKOOOOO")
-	fmt.Printf("RequestContext: %#v\n", h.Context)
-	fmt.Fprintf(w, "RequestContext: %#v\n", h.Context)
-	fmt.Println("UNKOOOOO")
-	return h.Context.JSON(w, http.StatusOK, h.Context)
-}
-
 func (h indexHandler) AuthIndex(w http.ResponseWriter, r *http.Request) error {
 	id := h.GetAuthUserID(r.Context())
 	return h.JSON(w, http.StatusOK, id)
 }
 
-func (h indexHandler) TestSetRedis(w http.ResponseWriter, r *http.Request) error {
-	k := r.FormValue("key")
-	v := r.FormValue("value")
-
-	t := TestRedis{
-		Key:   k,
-		Value: v,
-	}
-
-	err := h.Cache().SET(k, t)
-	if err != nil {
-		return h.JSON(w, http.StatusInternalServerError, err.Error())
-	}
-
-	cookie := &http.Cookie{
-		Name:  k,
-		Value: v,
-	}
-
-	http.SetCookie(w, cookie)
-
-	return h.JSON(w, http.StatusOK, t)
-}
-
-func (h indexHandler) TestGetRedis(w http.ResponseWriter, r *http.Request) error {
-	vars := mux.Vars(r)
-	k := vars["key"]
-
-	t := TestRedis{}
-	err := h.Cache().GET(k, &t)
-	if err != nil {
-		return h.JSON(w, http.StatusInternalServerError, err.Error())
-	}
-
-	return h.JSON(w, http.StatusOK, t)
-}
-
 func NewIndexHandler(c *request.Context) *indexHandler {
 	return &indexHandler{c}
 }
diff --git a/backend/interfaces/api/user_api/api.go b/backend/interfaces/api/user_api/api.go
index 5cb91ea6..50d41d7c 100644
--- a/backend/interfaces/api/user_api/api.go
+++ b/backend/interfaces/api/user_api/api.go
@@ -50,18 +50,6 @@ func Apply(r router.Router, conf config.Configs, logger logger.Logger, db model.
 		twitter := r.Group("/twitter")
 		twitter.GET("/timeline", twitterHandler.GetTimeLine)
 	}
-	{
-		// Grouping
-		t := r.Group("/test")
-		t.GET("", h.TestHandler)
-		t.POST("/redis", h.TestSetRedis)
-		t.GET("/redis/{key}", h.TestGetRedis)
-		t.GET("/v2", h.Index)
-	}
-	{
-		c := r.Group("/cmd")
-		c.GET("", h.Command)
-	}
 	{
 		auth := r.Group("/auth")
 		userHandler := registory.NewUserRegistory(ctx)