For Ranran Fujii, an "FSD Best" compilation is not just a collection of random scenes. It is a curation of moments where her acting ability shines through. Unlike performers who simply "endure" the scene, Fujii is known for her expressive face. Whether she is portraying the shy amateur or the enthusiastic participant, the "FSD" label implies that the camera work is prioritized to capture her facial transitions—confusion, pleasure, and exhaustion—in high definition.