This model was trained on Pony and works as intended using a Pony Diffusion base model!

There are some Haruka models already on CivitAi, but i haven't found any with the 19-20 years old SDXL version of Haru.
Haruka Nanase (七瀬 遙 Nanase Haruka) from the anime Free! Season 3 - Dive to the Future!

The model is relatively flexible in terms of outfits, but there is a specifc activation tag for getting images with Haru's swimwear

• Activation tags: pony_haruka, score_9, score_anime

• Additional tag to get Haru's typical swimwear: haruka_legskin

Since the base model was Pony, I recommend using Pony-specifc tags when prompting (like score_9, score_anime).