Just let your imagination run wild and write about the things you love. Don't worry too much about rules and just enjoy the process.
Well, one way to have fun writing a light novel is to not put too much pressure on yourself. Write at your own pace and have fun with the story. Maybe draw inspiration from your own experiences or dreams. And don't be afraid to take risks and try something new.
To have fun writing a light novel, start with a captivating idea that really excites you. Then, create characters you can relate to or find interesting. Don't be afraid to add humor or unexpected twists. Also, give yourself the freedom to explore different styles and themes.