Instead of final_v3.webp, use:
project_char_scene_variant_previewNum.webp
Add to HTML:
<picture>
<source srcset="preview.webp" type="image/webp">
<img src="preview.jpg" alt="Emma preview">
</picture>
Based on standard indexing for this genre and filename structure: dd39s loland emma n63 preview6 webp hot