UIViewController navigation without segue or parent UINavigationController

ViewController.m

// UIViewController nagivation without the navigation controller.
// UIStoryboard->UINavigationController
//

// Initializations
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
SecondViewController *svc = (SecondViewController *)[storyboard instantiateViewControllerWithIdentifier:@"identifierName"];

// Navigation
dispatch_async(dispatch_get_main_queue(), ^{
  [self.navigationController pushViewController:svc animated:YES];
  self.navigationItem.backBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"" style:UIBarButtonItemStylePlain 
                                           target:nil action:nil];
});