diff --git a/hwe/sammo/Auction.php b/hwe/sammo/Auction.php
index 78169f1e..a5282512 100644
--- a/hwe/sammo/Auction.php
+++ b/hwe/sammo/Auction.php
@@ -41,6 +41,6 @@ class Auction
     if ($rawBettingInfo === null) {
       throw new \RuntimeException("해당 경매가 없습니다: {$auctionID}");
     }
-    $this->info = new AuctionInfo($rawBettingInfo);
+    $this->info = AuctionInfo::fromArray($rawBettingInfo);
   }
 }
diff --git a/hwe/sammo/DTO/AuctionBidItem.php b/hwe/sammo/DTO/AuctionBidItem.php
index 185cc37a..296a2df7 100644
--- a/hwe/sammo/DTO/AuctionBidItem.php
+++ b/hwe/sammo/DTO/AuctionBidItem.php
@@ -2,37 +2,25 @@
 
 namespace sammo\DTO;
 
-use sammo\Json;
-use Spatie\DataTransferObject\DataTransferObject;
-use Spatie\DataTransferObject\Attributes\MapFrom;
-use Spatie\DataTransferObject\Attributes\MapTo;
+use sammo\DTO\Attr\JsonString;
+use sammo\DTO\Attr\RawName;
 
-class AuctionBidItem  extends DataTransferObject{
-  public int $id;
-  #[MapFrom('auction_id')]
-  #[MapTo('auction_id')]
-  public int $auctionID;
-  public ?int $owner;
+class AuctionBidItem extends DTO
+{
+  public function __construct(
+    public int $id,
+    #[RawName('auction_id')]
+    public int $auctionID,
+    public ?int $owner,
 
-  #[MapFrom('general_id')]
-  #[MapTo('general_id')]
-  public int $generalID;
+    #[RawName('general_id')]
+    public int $generalID,
 
-  public int $amount;
+    public int $amount,
 
-  public string $date;
-  public AuctionBidItemData $data;
-
-  public static function parse(array $data): self
-  {
-    $data['data'] = Json::decode($data['data']);
-    return new self($data);
+    public string $date,
+    #[JsonString]
+    public AuctionBidItemData $data,
+  ) {
   }
-
-  public function toArray(): array
-  {
-    $result = parent::toArray();
-    $result['data'] = Json::encode($this->data);
-    return $result;
-  }
-}
\ No newline at end of file
+}
diff --git a/hwe/sammo/DTO/AuctionBidItemData.php b/hwe/sammo/DTO/AuctionBidItemData.php
index 5d065ddb..86f7e9d3 100644
--- a/hwe/sammo/DTO/AuctionBidItemData.php
+++ b/hwe/sammo/DTO/AuctionBidItemData.php
@@ -2,9 +2,11 @@
 
 namespace sammo\DTO;
 
-use Spatie\DataTransferObject\DataTransferObject;
-
-class AuctionBidItemData  extends DataTransferObject{
-  public string $ownerName;
-  public string $generalName;
-}
\ No newline at end of file
+class AuctionBidItemData extends DTO
+{
+  public function __construct(
+    public string $ownerName,
+    public string $generalName,
+  ) {
+  }
+}
diff --git a/hwe/sammo/DTO/AuctionInfo.php b/hwe/sammo/DTO/AuctionInfo.php
index 7f2b5ff5..d1b86113 100644
--- a/hwe/sammo/DTO/AuctionInfo.php
+++ b/hwe/sammo/DTO/AuctionInfo.php
@@ -2,27 +2,19 @@
 
 namespace sammo\DTO;
 
-use Spatie\DataTransferObject\Attributes\CastWith;
-use Spatie\DataTransferObject\Attributes\Strict;
-use Spatie\DataTransferObject\DataTransferObject;
-
 use sammo\Enums\ResourceType;
-use sammo\DTO\Caster\BackedEnumCaster;
 
-//https://json2dto.atymic.dev/
-
-
-
-#[Strict]
-class AuctionInfo extends DataTransferObject
+class AuctionInfo extends DTO
 {
-	public int $id;
-  public int $openerName;
-  public int $openerGeneralID;
-  public string $type;
-	public bool $finished;
-  #[CastWith(BackedEnumCaster::class)]
-	public ResourceType $reqResource;
-	public string $openDate;
-	public string $closeDate;
+	public function __construct(
+		public int $id,
+		public int $openerName,
+		public int $openerGeneralID,
+		public string $type,
+		public bool $finished,
+		public ResourceType $reqResource,
+		public string $openDate,
+		public string $closeDate,
+	) {
+	}
 }
diff --git a/hwe/sammo/DTO/Caster/BackedEnumCaster.php b/hwe/sammo/DTO/Caster/BackedEnumCaster.php
deleted file mode 100644
index d8c9b04e..00000000
--- a/hwe/sammo/DTO/Caster/BackedEnumCaster.php
+++ /dev/null
@@ -1,27 +0,0 @@
-<?php
-namespace sammo\DTO\Caster;
-use Spatie\DataTransferObject\Caster;
-
-class BackedEnumCaster implements Caster
-{
-    private \ReflectionMethod $backedEnumFrom;
-    public function __construct(
-        array $type,
-    ) {
-        $enumType = $type[0] ?? null;
-        if(!is_subclass_of($enumType, \BackedEnum::class)){
-            throw new \Exception('Not BackedEnum: '.$enumType);
-        }
-        $reflector = new \ReflectionEnum($enumType);
-        $this->backedEnumFrom = $reflector->getMethod('from');
-    }
-
-    public function cast(mixed $value): \BackedEnum
-    {
-        if(!is_string($value) && !is_int($value)){
-            throw new \Exception('BackedEnumCaster only accepts string|int');
-        }
-
-        return $this->backedEnumFrom->invoke(null, $value);
-    }
-}
\ No newline at end of file