Chapter 1 of 'Have a Nice Day' manga might introduce the world and characters. Maybe it starts with a captivating event or a mystery that hooks the readers. It could also lay out some background or themes that will be explored throughout the story.
There are several options. Sometimes, official manga platforms like ComiXology or Shonen Jump might have it. Also, some fan-run sites could host it, but be careful of the legality and quality on such sites.
Here are some recommendations for good novels about the date of birth:
1. " Days of Transformation in the Other World ": The protagonist was born in a noble family. After his old father passed away, he had to disguise himself as a man. With the help of a divine artifact, he met a handsome man and a beautiful woman.
2. " The swapped daughter is reborn ": Yu Shu found out that she was not her biological daughter, but the daughter of a wealthy family who had been maliciously swapped.
3. [The Tyrants 'Little Princess: The protagonist was born as a group pet and enjoyed a free life.]
4. [Book of Troubled Times]: It tells the story of a safe rebirth.
5. "I'll accept this knee!": After the female protagonist was reborn, she found that her life was a well-designed reality show script.
Please note that the novels recommended above may not completely meet the requirements of the title, because the keyword "date of birth" is not explicitly mentioned in the given search results.
One idea could be that Bakugou wakes up with a strange quirk malfunction that makes him overly nice. He starts complimenting his classmates, which leaves everyone in shock. For example, he tells Deku that his analysis skills are actually really impressive. This throws the whole class dynamic off, but in a really interesting way.