diff --git a/.env.example b/.env.example
index c8f3f95..73273f2 100644
--- a/.env.example
+++ b/.env.example
@@ -3,6 +3,7 @@ APP_KEY=
 APP_DEBUG=true
 APP_LOG_LEVEL=debug
 APP_URL=http://localhost
+SYSTEM_ADMIN_EMAILS=
 
 LOG_CHANNEL=stack
 
diff --git a/app/Helpers/functions.php b/app/Helpers/functions.php
index 7d01353..0d49361 100644
--- a/app/Helpers/functions.php
+++ b/app/Helpers/functions.php
@@ -58,3 +58,15 @@ function userPhotoPath($photoPath, $genderId)
 
     return asset('images/icon_user_'.$genderId.'.png');
 }
+
+function is_system_admin(User $user)
+{
+    if ($user->email) {
+        if (config('app.system_admin_emails')) {
+            $adminEmails = explode(';', config('app.system_admin_emails'));
+            return in_array($user->email, $adminEmails);
+        }
+    }
+
+    return false;
+}
diff --git a/app/Http/Kernel.php b/app/Http/Kernel.php
index 41fa18a..56caea8 100644
--- a/app/Http/Kernel.php
+++ b/app/Http/Kernel.php
@@ -53,6 +53,7 @@ class Kernel extends HttpKernel
     protected $routeMiddleware = [
         'auth' => \Illuminate\Auth\Middleware\Authenticate::class,
         'auth.basic' => \Illuminate\Auth\Middleware\AuthenticateWithBasicAuth::class,
+        'admin' => \App\Http\Middleware\AdminOnly::class,
         'bindings' => \Illuminate\Routing\Middleware\SubstituteBindings::class,
         'can' => \Illuminate\Auth\Middleware\Authorize::class,
         'guest' => \App\Http\Middleware\RedirectIfAuthenticated::class,
diff --git a/app/Http/Middleware/AdminOnly.php b/app/Http/Middleware/AdminOnly.php
new file mode 100644
index 0000000..63a89d2
--- /dev/null
+++ b/app/Http/Middleware/AdminOnly.php
@@ -0,0 +1,24 @@
+<?php
+
+namespace App\Http\Middleware;
+
+use Closure;
+
+class AdminOnly
+{
+    /**
+     * Handle an incoming request.
+     *
+     * @param  \Illuminate\Http\Request  $request
+     * @param  \Closure  $next
+     * @return mixed
+     */
+    public function handle($request, Closure $next)
+    {
+        if (!is_system_admin($request->user())) {
+            abort(403);
+        }
+
+        return $next($request);
+    }
+}
diff --git a/app/Policies/CouplePolicy.php b/app/Policies/CouplePolicy.php
index 60ef143..c09d29d 100644
--- a/app/Policies/CouplePolicy.php
+++ b/app/Policies/CouplePolicy.php
@@ -19,6 +19,6 @@ class CouplePolicy
      */
     public function edit(User $user, Couple $couple)
     {
-        return $couple->manager_id == $user->id;
+        return $couple->manager_id == $user->id || is_system_admin($user);
     }
 }
diff --git a/app/Policies/UserPolicy.php b/app/Policies/UserPolicy.php
index 9338d94..9004da0 100644
--- a/app/Policies/UserPolicy.php
+++ b/app/Policies/UserPolicy.php
@@ -18,7 +18,7 @@ class UserPolicy
      */
     public function edit(User $user, User $editableUser)
     {
-        return $editableUser->id == $user->id || $editableUser->manager_id == $user->id;
+        return $editableUser->id == $user->id || $editableUser->manager_id == $user->id || is_system_admin($user);
     }
 
     /**
@@ -30,6 +30,6 @@ class UserPolicy
      */
     public function delete(User $user, User $editableUser)
     {
-        return $editableUser->manager_id == $user->id && $editableUser->id != $user->id;
+        return ($editableUser->manager_id == $user->id || is_system_admin($user)) && $editableUser->id != $user->id;
     }
 }
diff --git a/config/app.php b/config/app.php
index 0541103..c0b9eb0 100644
--- a/config/app.php
+++ b/config/app.php
@@ -29,6 +29,18 @@ return [
 
     /*
     |--------------------------------------------------------------------------
+    | System Administrator Emails
+    |--------------------------------------------------------------------------
+    |
+    | This is config stores emails of users who have role of administrators.
+    | The user can edit and delete any users and marriages int he system.
+    |
+    */
+
+    'system_admin_emails' => env('SYSTEM_ADMIN_EMAILS'),
+
+    /*
+    |--------------------------------------------------------------------------
     | Application Debug Mode
     |--------------------------------------------------------------------------
     |
diff --git a/resources/lang/en/birthday.php b/resources/lang/en/birthday.php
index a90b50b..6d1eb6f 100644
--- a/resources/lang/en/birthday.php
+++ b/resources/lang/en/birthday.php
@@ -1,9 +1,10 @@
 <?php
 
 return [
-    'birthday'  => 'Birhtday',
-    'upcoming'  => 'Upcoming birthdays',
-    'remaining' => ':count days',
-    'age_years' => ':age years',
-    'days'      => 'days',
+    'birthday'    => 'Birthday',
+    'upcoming'    => 'Upcoming birthdays',
+    'no_upcoming' => 'No upcoming birthdays in the next :days days.',
+    'remaining'   => ':count days',
+    'age_years'   => ':age years',
+    'days'        => 'days',
 ];
diff --git a/resources/lang/id/birthday.php b/resources/lang/id/birthday.php
index 7a446a6..6962549 100644
--- a/resources/lang/id/birthday.php
+++ b/resources/lang/id/birthday.php
@@ -1,9 +1,10 @@
 <?php
 
 return [
-    'birthday'  => 'Ulang Tahun',
-    'upcoming'  => 'Ulang tahun akan datang',
-    'remaining' => ':count hari',
-    'age_years' => ':age tahun',
-    'days'      => 'Hari',
+    'birthday'    => 'Ulang Tahun',
+    'upcoming'    => 'Ulang tahun akan datang',
+    'no_upcoming' => 'Belum ada ulang tahun dalam :days hari kedepan.',
+    'remaining'   => ':count hari',
+    'age_years'   => ':age tahun',
+    'days'        => 'Hari',
 ];
diff --git a/resources/views/birthdays/index.blade.php b/resources/views/birthdays/index.blade.php
index 713df35..422831f 100644
--- a/resources/views/birthdays/index.blade.php
+++ b/resources/views/birthdays/index.blade.php
@@ -35,7 +35,7 @@
                     </tr>
                     @empty
                     <tr>
-                        <td colspan="4">{{ __('user.no_upcoming_birthday', ['days' => 60]) }}</td>
+                        <td colspan="4">{{ __('birthday.no_upcoming', ['days' => 60]) }}</td>
                     </tr>
                     @endforelse
                 </tbody>
diff --git a/resources/views/layouts/partials/nav.blade.php b/resources/views/layouts/partials/nav.blade.php
index 00a14f3..bdfbfff 100644
--- a/resources/views/layouts/partials/nav.blade.php
+++ b/resources/views/layouts/partials/nav.blade.php
@@ -39,7 +39,9 @@
                         </a>
 
                         <ul class="dropdown-menu" role="menu">
-                            <li><a href="{{ route('backups.index') }}">{{ __('backup.list') }}</a></li>
+                            @if (is_system_admin(auth()->user()))
+                                <li><a href="{{ route('backups.index') }}">{{ __('backup.list') }}</a></li>
+                            @endif
                             <li><a href="{{ route('profile') }}">{{ __('app.my_profile') }}</a></li>
                             <li><a href="{{ route('password.change') }}">{{ __('auth.change_password') }}</a></li>
                             <li>
diff --git a/routes/web.php b/routes/web.php
index 5ab19ce..7403c45 100644
--- a/routes/web.php
+++ b/routes/web.php
@@ -50,9 +50,14 @@ Route::get('couples/{couple}/edit', ['as' => 'couples.edit', 'uses' => 'CouplesC
 Route::patch('couples/{couple}', ['as' => 'couples.update', 'uses' => 'CouplesController@update']);
 
 /**
- * Backup Restore Database Routes
+ * Admin only routes
  */
-Route::post('backups/upload', ['as' => 'backups.upload', 'uses' => 'BackupsController@upload']);
-Route::post('backups/{fileName}/restore', ['as' => 'backups.restore', 'uses' => 'BackupsController@restore']);
-Route::get('backups/{fileName}/dl', ['as' => 'backups.download', 'uses' => 'BackupsController@download']);
-Route::resource('backups', 'BackupsController');
+Route::group(['middleware' => 'admin'], function () {
+    /**
+     * Backup Restore Database Routes
+     */
+    Route::post('backups/upload', ['as' => 'backups.upload', 'uses' => 'BackupsController@upload']);
+    Route::post('backups/{fileName}/restore', ['as' => 'backups.restore', 'uses' => 'BackupsController@restore']);
+    Route::get('backups/{fileName}/dl', ['as' => 'backups.download', 'uses' => 'BackupsController@download']);
+    Route::resource('backups', 'BackupsController');
+});
diff --git a/tests/Unit/Helpers/IsSystemAdminHelperTest.php b/tests/Unit/Helpers/IsSystemAdminHelperTest.php
new file mode 100644
index 0000000..b3af215
--- /dev/null
+++ b/tests/Unit/Helpers/IsSystemAdminHelperTest.php
@@ -0,0 +1,44 @@
+<?php
+
+namespace Tests\Unit\Helpers;
+
+use App\User;
+use Tests\TestCase;
+
+class IsSystemAdminHelperTest extends TestCase
+{
+    /** @test */
+    public function user_is_an_admin()
+    {
+        $adminEmail1 = 'admin1@example.net';
+        $adminEmail2 = 'admin2@example.net';
+        config(['app.system_admin_emails' => $adminEmail1.';'.$adminEmail2]);
+
+        $admin1 = factory(User::class)->make(['email' => $adminEmail1]);
+        $admin2 = factory(User::class)->make(['email' => $adminEmail2]);
+        $userWithEmail = factory(User::class)->make(['email' => 'user@example.net']);
+        $userWithNoEmail = factory(User::class)->make(['email' => null]);
+
+        $this->assertTrue(is_system_admin($admin1));
+        $this->assertTrue(is_system_admin($admin2));
+        $this->assertFalse(is_system_admin($userWithEmail));
+        $this->assertFalse(is_system_admin($userWithNoEmail));
+    }
+
+    /** @test */
+    public function if_config_is_null()
+    {
+        $adminEmail1 = 'admin1@example.net';
+        $adminEmail2 = 'admin2@example.net';
+
+        $admin1 = factory(User::class)->make(['email' => $adminEmail1]);
+        $admin2 = factory(User::class)->make(['email' => $adminEmail2]);
+        $userWithEmail = factory(User::class)->make(['email' => 'user@example.net']);
+        $userWithNoEmail = factory(User::class)->make(['email' => null]);
+
+        $this->assertFalse(is_system_admin($admin1));
+        $this->assertFalse(is_system_admin($admin2));
+        $this->assertFalse(is_system_admin($userWithEmail));
+        $this->assertFalse(is_system_admin($userWithNoEmail));
+    }
+}
diff --git a/tests/Unit/Policies/CouplePolicyTest.php b/tests/Unit/Policies/CouplePolicyTest.php
index c6efe71..5e2639e 100644
--- a/tests/Unit/Policies/CouplePolicyTest.php
+++ b/tests/Unit/Policies/CouplePolicyTest.php
@@ -3,7 +3,9 @@
 namespace Tests\Unit\Policies;
 
 use App\Couple;
+use App\User;
 use Illuminate\Foundation\Testing\RefreshDatabase;
+use Illuminate\Support\Str;
 use Tests\TestCase;
 
 class CouplePolicyTest extends TestCase
@@ -11,11 +13,33 @@ class CouplePolicyTest extends TestCase
     use RefreshDatabase;
 
     /** @test */
-    public function admin_can_edit_couple_data()
+    public function manager_can_edit_couples()
     {
-        $couple = factory(Couple::class)->create();
-        $manager = $couple->manager;
+        $otherCoupleManagerId = Str::random();
+        $manager = factory(User::class)->create();
+        $couple = factory(Couple::class)->create(['manager_id' => $manager->id]);
+        $otherCouple = factory(Couple::class)->create(['manager_id' => $otherCoupleManagerId]);
 
         $this->assertTrue($manager->can('edit', $couple));
+        $this->assertFalse($manager->can('edit', $otherCouple));
+    }
+
+    /** @test */
+    public function admins_can_edit_any_couple_data()
+    {
+        $adminEmail = 'admin@example.net';
+        $otherCoupleManagerId = Str::random();
+        config(['app.system_admin_emails' => $adminEmail]);
+
+        $manager = factory(User::class)->create();
+        $admin = factory(User::class)->create(['email' => $adminEmail]);
+        $couple = factory(Couple::class)->create(['manager_id' => $manager->id]);
+        $otherCouple = factory(Couple::class)->create(['manager_id' => $otherCoupleManagerId]);
+
+        $this->assertTrue($admin->can('edit', $couple));
+        $this->assertTrue($admin->can('edit', $otherCouple));
+
+        $this->assertTrue($manager->can('edit', $couple));
+        $this->assertFalse($manager->can('edit', $otherCouple));
     }
 }
diff --git a/tests/Unit/Policies/UserPolicyTest.php b/tests/Unit/Policies/UserPolicyTest.php
index 8e15134..be79a75 100644
--- a/tests/Unit/Policies/UserPolicyTest.php
+++ b/tests/Unit/Policies/UserPolicyTest.php
@@ -3,8 +3,9 @@
 namespace Tests\Unit\Policies;
 
 use App\User;
-use Tests\TestCase;
 use Illuminate\Foundation\Testing\RefreshDatabase;
+use Illuminate\Support\Str;
+use Tests\TestCase;
 
 class UserPolicyTest extends TestCase
 {
@@ -13,10 +14,32 @@ class UserPolicyTest extends TestCase
     /** @test */
     public function manager_can_edit_users_profile()
     {
+        $otherUserManagerId = Str::random();
+        $manager = factory(User::class)->create();
+        $user = factory(User::class)->create(['manager_id' => $manager->id]);
+        $otherUser = factory(User::class)->create(['manager_id' => $otherUserManagerId]);
+
+        $this->assertTrue($manager->can('edit', $user));
+        $this->assertFalse($manager->can('edit', $otherUser));
+    }
+
+    /** @test */
+    public function admins_can_edit_any_user_profile()
+    {
+        $adminEmail = 'admin@example.net';
+        $otherUserManagerId = Str::random();
+        config(['app.system_admin_emails' => $adminEmail]);
+
         $manager = factory(User::class)->create();
+        $admin = factory(User::class)->create(['email' => $adminEmail]);
         $user = factory(User::class)->create(['manager_id' => $manager->id]);
+        $otherUser = factory(User::class)->create(['manager_id' => $otherUserManagerId]);
+
+        $this->assertTrue($admin->can('edit', $user));
+        $this->assertTrue($admin->can('edit', $otherUser));
 
         $this->assertTrue($manager->can('edit', $user));
+        $this->assertFalse($manager->can('edit', $otherUser));
     }
 
     /** @test */
@@ -30,10 +53,32 @@ class UserPolicyTest extends TestCase
     /** @test */
     public function manager_can_delete_a_user()
     {
+        $otherUserManagerId = Str::random();
         $manager = factory(User::class)->create();
         $user = factory(User::class)->create(['manager_id' => $manager->id]);
+        $otherUser = factory(User::class)->create(['manager_id' => $otherUserManagerId]);
+
+        $this->assertTrue($manager->can('delete', $user));
+        $this->assertFalse($manager->can('delete', $otherUser));
+    }
+
+    /** @test */
+    public function admins_can_delete_any_user()
+    {
+        $adminEmail = 'admin@example.net';
+        $otherUserManagerId = Str::random();
+        config(['app.system_admin_emails' => $adminEmail]);
+
+        $manager = factory(User::class)->create();
+        $admin = factory(User::class)->create(['email' => $adminEmail]);
+        $user = factory(User::class)->create(['manager_id' => $manager->id]);
+        $otherUser = factory(User::class)->create(['manager_id' => $otherUserManagerId]);
+
+        $this->assertTrue($admin->can('delete', $user));
+        $this->assertTrue($admin->can('delete', $otherUser));
 
         $this->assertTrue($manager->can('delete', $user));
+        $this->assertFalse($manager->can('delete', $otherUser));
     }
 
     /** @test */