I used a lot of Niji V6 style images. The style is described as pseudo-realism and semi-realism, so I tried to focus on these two styles.

Style characteristics: The Niji V6 style uses high-quality images, distinguishes between night and day, and adds dark lighting styles and reflections.

Perhaps you can use trigger words such as:

1. Realistic style: pseudo-realistic, semi-realism, realism, realistic
2. For night scenes: color theory, darkness, night, night time
3. Cartoon style: cartoon, lineless, flat color