diff --git a/api/api.gen.go b/api/api.gen.go
index 3f4f5dd..5222930 100644
--- a/api/api.gen.go
+++ b/api/api.gen.go
@@ -44,8 +44,8 @@ type ReleaseSeason string
 // Studio defines model for Studio.
 type Studio struct {
 	Description *string `json:"description,omitempty"`
-	Id          *int64  `json:"id,omitempty"`
-	Name        *string `json:"name,omitempty"`
+	Id          int64   `json:"id"`
+	Name        string  `json:"name"`
 	Poster      *Image  `json:"poster,omitempty"`
 }
 
@@ -639,6 +639,14 @@ func (response GetTitleTitleId200JSONResponse) VisitGetTitleTitleIdResponse(w ht
 	return json.NewEncoder(w).Encode(response)
 }
 
+type GetTitleTitleId204Response struct {
+}
+
+func (response GetTitleTitleId204Response) VisitGetTitleTitleIdResponse(w http.ResponseWriter) error {
+	w.WriteHeader(204)
+	return nil
+}
+
 type GetTitleTitleId400Response struct {
 }
 
diff --git a/api/openapi.yaml b/api/openapi.yaml
index 9ea20f4..7c83426 100644
--- a/api/openapi.yaml
+++ b/api/openapi.yaml
@@ -94,6 +94,8 @@ paths:
           description: Request params are not correct
         '500':
           description: Unknown server error
+        '204':
+          description: No title found
 
 #     patch:
 #       summary: Update title info
@@ -636,6 +638,9 @@ components:
 
     Studio:
       type: object
+      required:
+        - id
+        - name
       properties:
         id:
           type: integer
diff --git a/modules/backend/handlers/titles.go b/modules/backend/handlers/titles.go
index e5fcf18..c66fef5 100644
--- a/modules/backend/handlers/titles.go
+++ b/modules/backend/handlers/titles.go
@@ -2,6 +2,7 @@ package handlers
 
 import (
 	"context"
+	"database/sql"
 	"encoding/json"
 	"fmt"
 	oapi "nyanimedb/api"
@@ -11,12 +12,10 @@ import (
 )
 
 func Word2Sqlc(s *string) *string {
-	if s == nil {
-		return nil
-	}
-	if *s == "" {
+	if s == nil || *s == "" {
 		return nil
 	}
+
 	return s
 }
 
@@ -58,20 +57,19 @@ func ReleaseSeason2sqlc(s *oapi.ReleaseSeason) (*sqlc.ReleaseSeasonT, error) {
 	return &t, nil
 }
 
-// type TitleNames map[string][]string
-// type EpisodeLens map[string]float64
-// type TagNames []map[string]string
-
 func (s Server) GetTagsByTitleId(ctx context.Context, id int64) (oapi.Tags, error) {
 
 	sqlc_title_tags, err := s.db.GetTitleTags(ctx, id)
 	if err != nil {
+		if err == sql.ErrNoRows {
+			return nil, nil
+		}
 		return nil, fmt.Errorf("query GetTitleTags: %v", err)
 	}
 
-	var oapi_tag_names oapi.Tags
+	oapi_tag_names := make(oapi.Tags, 1)
 	for _, title_tag := range sqlc_title_tags {
-		var oapi_tag_name map[string]string
+		oapi_tag_name := make(map[string]string, 1)
 		err = json.Unmarshal(title_tag, &oapi_tag_name)
 		if err != nil {
 			return nil, fmt.Errorf("unmarshalling title_tag: %v", err)
@@ -82,56 +80,65 @@ func (s Server) GetTagsByTitleId(ctx context.Context, id int64) (oapi.Tags, erro
 	return oapi_tag_names, nil
 }
 
-func (s Server) GetImage(ctx context.Context, id int64) (oapi.Image, error) {
+func (s Server) GetImage(ctx context.Context, id int64) (*oapi.Image, error) {
 
-	var oapi_image oapi.Image
+	var oapi_image *oapi.Image
 
 	sqlc_image, err := s.db.GetImageByID(ctx, id)
 	if err != nil {
+		if err == sql.ErrNoRows {
+			return nil, nil
+		}
 		return oapi_image, fmt.Errorf("query GetImageByID: %v", err)
 	}
 
-	//can cast and dont use brain cause all this fiels required
+	//can cast and dont use brain cause all this fields  required in image table
 	oapi_image.Id = &sqlc_image.ID
 	oapi_image.ImagePath = &sqlc_image.ImagePath
-	storageTypeStr := string(sqlc_image.StorageType) // или fmt.Sprint(...), если int
+	storageTypeStr := string(sqlc_image.StorageType)
 	oapi_image.StorageType = &storageTypeStr
 
 	return oapi_image, nil
 }
 
-func (s Server) GetStudio(ctx context.Context, id int64) (oapi.Studio, error) {
+func (s Server) GetStudio(ctx context.Context, id int64) (*oapi.Studio, error) {
 
 	var oapi_studio oapi.Studio
 
 	sqlc_studio, err := s.db.GetStudioByID(ctx, id)
 	if err != nil {
-		return oapi_studio, fmt.Errorf("query GetStudioByID: %v", err)
+		if err == sql.ErrNoRows {
+			return nil, nil
+		}
+		return &oapi_studio, fmt.Errorf("query GetStudioByID: %v", err)
 	}
 
-	oapi_studio.Id = &sqlc_studio.ID
+	oapi_studio.Id = sqlc_studio.ID
 	oapi_studio.Name = sqlc_studio.StudioName
 	oapi_studio.Description = sqlc_studio.StudioDesc
 
 	oapi_illust, err := s.GetImage(ctx, *sqlc_studio.IllustID)
 	if err != nil {
-		return oapi_studio, fmt.Errorf("GetImage: %v", err)
+		return &oapi_studio, fmt.Errorf("GetImage: %v", err)
+	}
+	if oapi_illust != nil {
+		oapi_studio.Poster = oapi_illust
 	}
-	oapi_studio.Poster = &oapi_illust
 
-	return oapi_studio, nil
+	return &oapi_studio, nil
 }
 
 func (s Server) mapTitle(ctx context.Context, title sqlc.Title) (oapi.Title, error) {
+
 	var oapi_title oapi.Title
 
-	var title_names map[string][]string
+	title_names := make(map[string][]string, 1)
 	err := json.Unmarshal(title.TitleNames, &title_names)
 	if err != nil {
 		return oapi_title, fmt.Errorf("unmarshal TitleNames: %v", err)
 	}
 
-	var episodes_lens map[string]float64
+	episodes_lens := make(map[string]float64, 1)
 	err = json.Unmarshal(title.EpisodesLen, &episodes_lens)
 	if err != nil {
 		return oapi_title, fmt.Errorf("unmarshal EpisodesLen: %v", err)
@@ -141,16 +148,25 @@ func (s Server) mapTitle(ctx context.Context, title sqlc.Title) (oapi.Title, err
 	if err != nil {
 		return oapi_title, fmt.Errorf("GetTagsByTitleId: %v", err)
 	}
+	if oapi_tag_names != nil {
+		oapi_title.Tags = oapi_tag_names
+	}
 
 	oapi_image, err := s.GetImage(ctx, *title.PosterID)
 	if err != nil {
 		return oapi_title, fmt.Errorf("GetImage: %v", err)
 	}
+	if oapi_image != nil {
+		oapi_title.Poster = oapi_image
+	}
 
 	oapi_studio, err := s.GetStudio(ctx, title.StudioID)
 	if err != nil {
 		return oapi_title, fmt.Errorf("GetStudio: %v", err)
 	}
+	if oapi_studio != nil {
+		oapi_title.Studio = oapi_studio
+	}
 
 	if title.ReleaseSeason != nil {
 		rs := oapi.ReleaseSeason(*title.ReleaseSeason)
@@ -163,12 +179,9 @@ func (s Server) mapTitle(ctx context.Context, title sqlc.Title) (oapi.Title, err
 	oapi_title.TitleStatus = &ts
 
 	oapi_title.Id = title.ID
-	oapi_title.Poster = &oapi_image
 	oapi_title.Rating = title.Rating
 	oapi_title.RatingCount = title.RatingCount
 	oapi_title.ReleaseYear = title.ReleaseYear
-	oapi_title.Studio = &oapi_studio
-	oapi_title.Tags = oapi_tag_names
 	oapi_title.TitleNames = title_names
 	oapi_title.EpisodesAired = title.EpisodesAired
 	oapi_title.EpisodesAll = title.EpisodesAll
@@ -182,6 +195,9 @@ func (s Server) GetTitleTitleId(ctx context.Context, request oapi.GetTitleTitleI
 
 	sqlc_title, err := s.db.GetTitleByID(ctx, request.TitleId)
 	if err != nil {
+		if err == sql.ErrNoRows {
+			return oapi.GetTitleTitleId204Response{}, nil
+		}
 		log.Errorf("%v", err)
 		return oapi.GetTitleTitleId500Response{}, nil
 	}
@@ -196,7 +212,7 @@ func (s Server) GetTitleTitleId(ctx context.Context, request oapi.GetTitleTitleI
 }
 
 func (s Server) GetTitle(ctx context.Context, request oapi.GetTitleRequestObject) (oapi.GetTitleResponseObject, error) {
-	var opai_titles []oapi.Title
+	opai_titles := make([]oapi.Title, 1)
 
 	word := Word2Sqlc(request.Params.Word)
 	status, err := TitleStatus2Sqlc(request.Params.Status)
diff --git a/modules/backend/queries.sql b/modules/backend/queries.sql
index 0570604..a4ed1fe 100644
--- a/modules/backend/queries.sql
+++ b/modules/backend/queries.sql
@@ -135,10 +135,10 @@ OFFSET sqlc.narg('offset')::int;
 -- WHERE title_id = sqlc.arg('title_id')
 -- RETURNING *;
 
--- -- name: GetReviewByID :one
--- SELECT review_id, user_id, title_id, image_ids, review_text, creation_date
--- FROM reviews
--- WHERE review_id = $1;
+-- name: GetReviewByID :one
+SELECT *
+FROM reviews
+WHERE review_id = sqlc.arg('review_id')::bigint;
 
 -- -- name: CreateReview :one
 -- INSERT INTO reviews (user_id, title_id, image_ids, review_text, creation_date)
@@ -157,7 +157,7 @@ OFFSET sqlc.narg('offset')::int;
 -- DELETE FROM reviews
 -- WHERE review_id = $1;
 
--- -- name: ListReviewsByTitle :many
+-- name: ListReviewsByTitle :many
 -- SELECT review_id, user_id, title_id, image_ids, review_text, creation_date
 -- FROM reviews
 -- WHERE title_id = $1
diff --git a/sql/migrations/000001_init.up.sql b/sql/migrations/000001_init.up.sql
index 97f881d..81f2801 100644
--- a/sql/migrations/000001_init.up.sql
+++ b/sql/migrations/000001_init.up.sql
@@ -54,7 +54,7 @@ CREATE TABLE users (
 
 CREATE TABLE studios (
     id                  bigint              GENERATED ALWAYS AS IDENTITY PRIMARY KEY,
-    studio_name         text                UNIQUE,
+    studio_name         text                NOT NULL UNIQUE,
     illust_id           bigint              REFERENCES images (id),
     studio_desc         text
 );
diff --git a/sql/models.go b/sql/models.go
index a36c6fa..a593504 100644
--- a/sql/models.go
+++ b/sql/models.go
@@ -233,7 +233,7 @@ type Signal struct {
 
 type Studio struct {
 	ID         int64   `json:"id"`
-	StudioName *string `json:"studio_name"`
+	StudioName string  `json:"studio_name"`
 	IllustID   *int64  `json:"illust_id"`
 	StudioDesc *string `json:"studio_desc"`
 }
diff --git a/sql/queries.sql.go b/sql/queries.sql.go
index 8539d8d..c5e6f8a 100644
--- a/sql/queries.sql.go
+++ b/sql/queries.sql.go
@@ -41,6 +41,55 @@ func (q *Queries) GetImageByID(ctx context.Context, illustID int64) (Image, erro
 	return i, err
 }
 
+const getReviewByID = `-- name: GetReviewByID :one
+
+
+SELECT id, data, rating, illust_id, user_id, title_id, created_at
+FROM reviews
+WHERE review_id = $1::bigint
+`
+
+// -- name: ListTitles :many
+// SELECT title_id, title_names, studio_id, poster_id, signal_ids,
+//
+//	title_status, rating, rating_count, release_year, release_season,
+//	season, episodes_aired, episodes_all, episodes_len
+//
+// FROM titles
+// ORDER BY title_id
+// LIMIT $1 OFFSET $2;
+// -- name: UpdateTitle :one
+// UPDATE titles
+// SET
+//
+//	title_names = COALESCE(sqlc.narg('title_names'), title_names),
+//	studio_id = COALESCE(sqlc.narg('studio_id'), studio_id),
+//	poster_id = COALESCE(sqlc.narg('poster_id'), poster_id),
+//	signal_ids = COALESCE(sqlc.narg('signal_ids'), signal_ids),
+//	title_status = COALESCE(sqlc.narg('title_status'), title_status),
+//	release_year = COALESCE(sqlc.narg('release_year'), release_year),
+//	release_season = COALESCE(sqlc.narg('release_season'), release_season),
+//	episodes_aired = COALESCE(sqlc.narg('episodes_aired'), episodes_aired),
+//	episodes_all = COALESCE(sqlc.narg('episodes_all'), episodes_all),
+//	episodes_len = COALESCE(sqlc.narg('episodes_len'), episodes_len)
+//
+// WHERE title_id = sqlc.arg('title_id')
+// RETURNING *;
+func (q *Queries) GetReviewByID(ctx context.Context, reviewID int64) (Review, error) {
+	row := q.db.QueryRow(ctx, getReviewByID, reviewID)
+	var i Review
+	err := row.Scan(
+		&i.ID,
+		&i.Data,
+		&i.Rating,
+		&i.IllustID,
+		&i.UserID,
+		&i.TitleID,
+		&i.CreatedAt,
+	)
+	return i, err
+}
+
 const getStudioByID = `-- name: GetStudioByID :one
 SELECT id, studio_name, illust_id, studio_desc
 FROM studios