Get referenced node fields in twig where reference is on remote node only
Your node is unaware of the fact that it is referenced by other nodes. So you need to query the nodes that are referencing your node in a preprocess hook:

/**
 * Implements hook_preprocess_HOOK() for node templates.
 */
function mytheme_preprocess_node(&amp;$variables) {
  $node = $variables['node'];
  $storage = \Drupal::entityTypeManager()-&gt;getStorage('node');
  $nodes2 = $storage-&gt;loadByProperties(['field_reference' =&gt; $node-&gt;id()]);
  $variables['nodes2'] = $nodes2;
  $variables['#cache']['tags'][] = 'node_list';

}


Then you can use the nodes you've found in Twig directly:

{% for node2 in nodes2 %}
  &lt;p&gt;This node is referenced by {{ node2.label }} ({{ node2.id }})&lt;/p&gt;
{% endfor %}


Rendering of the nodes

Or better build a entity view of those nodes by specifying a custom view mode, which you have configured to display the fields you want:

if ($nodes2) {
  $view_builder = \Drupal::entityTypeManager()-&gt;getViewBuilder('node');
  $nodes2_rendered = $view_builder-&gt;viewMultiple($nodes2, 'custom_view_mode');
  $variables['nodes2_rendered'] = $nodes2_rendered;
}


and render those nodes in Twig:

{{ nodes2_rendered }}