A watercolor style lora. Had best results around 0.5-0.8 strength.
0.5 and lower is good for preserving a more 'realistic' or 'anime' style, or for using a second style lora as the main style.
0.7-0.8 works especially well as the primary style generating images with less details (solo characters with white backgrounds, simple outfits, etc.).
Either way, play around with the settings and find what's best for you!