You can achieve this with the built in functionality of Joomla.
Create a Category Blog Menu Item and deactivate title under the options tab.
While creating an article, write first your fake title and maybe a short intro text.
Then use the "read more" button on the bottom of the editor to insert the read more button (displayed as line in the editor).
There are a couple of alternatives.
You can add styles or a style sheet into the administrator using the technique here:
How to add custom JS/CSS file, without modifying the template (from extension)?
Using $app->isClient('administrator') will allow you to add css just to the administrator. If you really want to load only on your page you can ...
// Import `ComponentHelper` class.
// Get all params of a specific component.
$params = ComponentHelper::getParams('com_yourcomponent');
// To get the value of the param.
Although I accepted Neil's answer, I found an easier method to do this. But my method may not appeal to many since it requires changing XML files of default Joomla installation. Perhaps there's a way to write a custom XML to override the settings selectively in the default XML.
Article form settings are available in these files:
Administrator menu items can be added to manifest file's <administration> section: