Hey, dear~
I read a few chapters, quite cute with their friendly banter. You can add some stories about side characters also to make the readers stick to books but don't get too distracted from the main characters either. Write about some interesting anecdotes between them since it's a friendly book, readers will find it entertaining and don't forget to add punctuation, change font and different pictures if you want to make the story more attractive. And the most important thing, write what you love, you enjoy, not for others.
All the best for upcoming chapters and more books in future.
