It is a character LoRA of Urara Shiraishi from Yamada-kun and the Seven Witches. The LoRA was trained on NovelAI.

For better appearance add "blonde hair, long hair, hair ornament, bow, school uniform, sweater vest, bowtie, red eyes, upper body, x hair ornament"

My pixiv: https://www.pixiv.net/users/91770680