Well, in the first chapter of 'Have a Nice Day' manga, you'll likely encounter the establishment of the setting, maybe a mystery or conflict to draw you in. It might also give you a sense of the art style and the tone of the entire manga.
The first chapter of 'Have a Nice Day' manga could present the main character's situation or problem, hint at potential developments, and offer a glimpse of the world it's set in. It's often a teaser to get you hooked and wanting more.
The first chapter usually sets the stage and introduces the main characters and the initial plot. You might expect some interesting character introductions and the start of an engaging story.