Changing the Characters and the Setting

I realized that my original idea wasn't enough for a whole novel. I felt that it did not contain enough content to be exciting enough. Instead, I thought of a new idea for my light novel. It has a different group of genres than the previous idea. The genres are Slice of Life,Comedy, Romance, and Drama. The setting is present day Japan. The main characters are high school students. The main antagonist is the principal of the school and her daughter. All the characters will be in Japanese style. Each character will have different and distinct personalities. I am still developing the plot, so I still can't reveal it yet.
That's it. Bye