I'm going to write a book which is a free-time event of the main story.
You will be hanging out or dating with the characters. This will be not part of the main story.
I'll call this book: Lightning Extraordinaire of Love.
This book will be like a dating simulator or a visual novel.
Inspirations for me to make this: Danganronpa's all free time events from the other games in the series, some other reverse harem dating visual novel games and other romantic visual novel games.