diff --git a/src/Reactant/Models/Reactant.php b/src/Reactant/Models/Reactant.php
index 6948a795..a033d4aa 100644
--- a/src/Reactant/Models/Reactant.php
+++ b/src/Reactant/Models/Reactant.php
@@ -43,12 +43,7 @@ final class Reactant extends Model implements
 
     protected $table = 'love_reactants';
 
-    /**
-     * @var string[]
-     */
-    protected $fillable = [
-        'type',
-    ];
+    protected static $unguarded = true;
 
     /**
      * @var string[]
diff --git a/src/Reactant/ReactionCounter/Models/ReactionCounter.php b/src/Reactant/ReactionCounter/Models/ReactionCounter.php
index 5b570bfc..ba739d70 100644
--- a/src/Reactant/ReactionCounter/Models/ReactionCounter.php
+++ b/src/Reactant/ReactionCounter/Models/ReactionCounter.php
@@ -19,6 +19,7 @@
 use Cog\Laravel\Love\Reactant\Models\Reactant;
 use Cog\Laravel\Love\ReactionType\Models\ReactionType;
 use Cog\Laravel\Love\Support\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Casts\Attribute;
 use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
 
@@ -33,30 +34,31 @@ final class ReactionCounter extends Model implements
 
     protected $table = 'love_reactant_reaction_counters';
 
+    protected static $unguarded = true;
+
     /**
-     * @var array<int|float>
+     * @var array<string, int|float>
      */
     protected $attributes = [
         'count' => self::COUNT_DEFAULT,
         'weight' => self::WEIGHT_DEFAULT,
     ];
 
-    /**
-     * @var string[]
-     */
-    protected $fillable = [
-        'reaction_type_id',
-        'count',
-        'weight',
-    ];
+    public function count(): Attribute
+    {
+        return new Attribute(
+            get: fn (int | null $value) => $value ?? self::COUNT_DEFAULT,
+            set: fn (int | null $value) => $value ?? self::COUNT_DEFAULT,
+        );
+    }
 
-    /**
-     * @var string[]
-     */
-    protected $casts = [
-        'count' => 'integer',
-        'weight' => 'float',
-    ];
+    public function weight(): Attribute
+    {
+        return new Attribute(
+            get: fn (float | null $value) => $value ?? self::WEIGHT_DEFAULT,
+            set: fn (float | null $value) => $value ?? self::WEIGHT_DEFAULT,
+        );
+    }
 
     public function reactant(): BelongsTo
     {
@@ -123,16 +125,4 @@ public function decrementWeight(
     ): void {
         $this->decrement('weight', $amount);
     }
-
-    public function setCountAttribute(
-        int | null $count,
-    ): void {
-        $this->attributes['count'] = $count ?? self::COUNT_DEFAULT;
-    }
-
-    public function setWeightAttribute(
-        float | null $weight,
-    ): void {
-        $this->attributes['weight'] = $weight ?? self::WEIGHT_DEFAULT;
-    }
 }
diff --git a/src/Reactant/ReactionTotal/Models/ReactionTotal.php b/src/Reactant/ReactionTotal/Models/ReactionTotal.php
index 30d82109..70c01380 100644
--- a/src/Reactant/ReactionTotal/Models/ReactionTotal.php
+++ b/src/Reactant/ReactionTotal/Models/ReactionTotal.php
@@ -17,6 +17,7 @@
 use Cog\Contracts\Love\Reactant\ReactionTotal\Models\ReactionTotal as ReactionTotalInterface;
 use Cog\Laravel\Love\Reactant\Models\Reactant;
 use Cog\Laravel\Love\Support\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Casts\Attribute;
 use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
 
@@ -31,29 +32,31 @@ final class ReactionTotal extends Model implements
 
     protected $table = 'love_reactant_reaction_totals';
 
+    protected static $unguarded = true;
+
     /**
-     * @var array<int|float>
+     * @var array<string, int|float>
      */
     protected $attributes = [
         'count' => self::COUNT_DEFAULT,
         'weight' => self::WEIGHT_DEFAULT,
     ];
 
-    /**
-     * @var string[]
-     */
-    protected $fillable = [
-        'count',
-        'weight',
-    ];
+    public function count(): Attribute
+    {
+        return new Attribute(
+            get: fn (int | null $value) => $value ?? self::COUNT_DEFAULT,
+            set: fn (int | null $value) => $value ?? self::COUNT_DEFAULT,
+        );
+    }
 
-    /**
-     * @var string[]
-     */
-    protected $casts = [
-        'count' => 'integer',
-        'weight' => 'float',
-    ];
+    public function weight(): Attribute
+    {
+        return new Attribute(
+            get: fn (float | null $value) => $value ?? self::WEIGHT_DEFAULT,
+            set: fn (float | null $value) => $value ?? self::WEIGHT_DEFAULT,
+        );
+    }
 
     public function reactant(): BelongsTo
     {
@@ -98,16 +101,4 @@ public function decrementWeight(
     ): void {
         $this->decrement('weight', $amount);
     }
-
-    public function setCountAttribute(
-        int | null $count,
-    ): void {
-        $this->attributes['count'] = $count ?? self::COUNT_DEFAULT;
-    }
-
-    public function setWeightAttribute(
-        float | null $weight,
-    ): void {
-        $this->attributes['weight'] = $weight ?? self::WEIGHT_DEFAULT;
-    }
 }
diff --git a/src/Reactant/ReactionTotal/Observers/ReactionTotalObserver.php b/src/Reactant/ReactionTotal/Observers/ReactionTotalObserver.php
new file mode 100644
index 00000000..e35ceb76
--- /dev/null
+++ b/src/Reactant/ReactionTotal/Observers/ReactionTotalObserver.php
@@ -0,0 +1,31 @@
+<?php
+
+/*
+ * This file is part of Laravel Love.
+ *
+ * (c) Anton Komarev <anton@komarev.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace Cog\Laravel\Love\Reactant\ReactionTotal\Observers;
+
+use Cog\Laravel\Love\Reactant\ReactionTotal\Models\ReactionTotal;
+
+final class ReactionTotalObserver
+{
+    public function creating(
+        ReactionTotal $total,
+    ): void {
+        if ($total->getAttributeValue('count') === null) {
+            $total->setAttribute('count', ReactionTotal::COUNT_DEFAULT);
+        }
+
+        if ($total->getAttributeValue('weight') === null) {
+            $total->setAttribute('weight', ReactionTotal::WEIGHT_DEFAULT);
+        }
+    }
+}
diff --git a/src/Reacter/Models/Reacter.php b/src/Reacter/Models/Reacter.php
index f7e79de5..d5c59f23 100644
--- a/src/Reacter/Models/Reacter.php
+++ b/src/Reacter/Models/Reacter.php
@@ -35,12 +35,7 @@ final class Reacter extends Model implements
 
     protected $table = 'love_reacters';
 
-    /**
-     * @var string[]
-     */
-    protected $fillable = [
-        'type',
-    ];
+    protected static $unguarded = true;
 
     /**
      * @var string[]
diff --git a/src/Reaction/Models/Reaction.php b/src/Reaction/Models/Reaction.php
index 091a6c23..c2751356 100644
--- a/src/Reaction/Models/Reaction.php
+++ b/src/Reaction/Models/Reaction.php
@@ -23,6 +23,7 @@
 use Cog\Laravel\Love\Reacter\Models\Reacter;
 use Cog\Laravel\Love\ReactionType\Models\ReactionType;
 use Cog\Laravel\Love\Support\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Casts\Attribute;
 use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
 
@@ -37,29 +38,40 @@ final class Reaction extends Model implements
 
     protected $table = 'love_reactions';
 
+    protected static $unguarded = true;
+
     /**
-     * @var float[]
+     * @var array<string, float>
      */
     protected $attributes = [
         'rate' => self::RATE_DEFAULT,
     ];
 
-    /**
-     * @var string[]
-     */
-    protected $fillable = [
-        'reactant_id',
-        'reaction_type_id',
-        'rate',
-    ];
+    public function id(): Attribute
+    {
+        return new Attribute(
+            get: fn (string | null $value) => $value,
+            set: fn (string | null $value) => $value,
+        );
+    }
 
-    /**
-     * @var string[]
-     */
-    protected $casts = [
-        'id' => 'string',
-        'rate' => 'float',
-    ];
+    public function rate(): Attribute
+    {
+        return new Attribute(
+            get: fn (float | null $value) => $value ?? self::RATE_DEFAULT,
+            set: function (float | null $value) {
+                if ($value !== null && ($value < self::RATE_MIN || $value > self::RATE_MAX)) {
+                    throw RateOutOfRange::withValueBetween(
+                        $value,
+                        self::RATE_MIN,
+                        self::RATE_MAX,
+                    );
+                }
+
+                return $value ?? self::RATE_DEFAULT;
+            },
+        );
+    }
 
     public function reactant(): BelongsTo
     {
@@ -106,16 +118,6 @@ public function getWeight(): float
         return $this->getType()->getMass() * $this->getRate();
     }
 
-    public function setRateAttribute(
-        float | null $rate,
-    ): void {
-        if ($rate !== null && ($rate < self::RATE_MIN || $rate > self::RATE_MAX)) {
-            throw RateOutOfRange::withValueBetween($rate, self::RATE_MIN, self::RATE_MAX);
-        }
-
-        $this->attributes['rate'] = $rate ?? self::RATE_DEFAULT;
-    }
-
     public function isOfType(
         ReactionTypeInterface $reactionType,
     ): bool {
diff --git a/src/ReactionType/Models/ReactionType.php b/src/ReactionType/Models/ReactionType.php
index a860d9fe..f107d113 100644
--- a/src/ReactionType/Models/ReactionType.php
+++ b/src/ReactionType/Models/ReactionType.php
@@ -29,6 +29,8 @@ final class ReactionType extends Model implements
 
     protected $table = 'love_reaction_types';
 
+    protected static $unguarded = true;
+
     /**
      * @var int[]
      */
@@ -36,14 +38,6 @@ final class ReactionType extends Model implements
         'mass' => self::MASS_DEFAULT,
     ];
 
-    /**
-     * @var string[]
-     */
-    protected $fillable = [
-        'name',
-        'mass',
-    ];
-
     /**
      * @var string[]
      */
diff --git a/tests/Unit/Reaction/Models/ReactionTest.php b/tests/Unit/Reaction/Models/ReactionTest.php
index 89e9fc49..6a4c7ba6 100644
--- a/tests/Unit/Reaction/Models/ReactionTest.php
+++ b/tests/Unit/Reaction/Models/ReactionTest.php
@@ -82,7 +82,7 @@ public function it_throws_rate_out_of_range_on_fill_rate_with_overflow_value():
     /** @test */
     public function it_casts_id_to_string(): void
     {
-        $reaction = Reaction::factory()->make([
+        $reaction = new Reaction([
             'id' => 4,
         ]);