The phrase "hamekatsu scoring busty tanned gyaru with raw best" represents a very specific intersection of Japanese adult media subgenres. To understand this niche, one has to break down the cultural archetypes and the specific "style" of content (hamekatsu) that defines this category.
Hunter: Known for street-pickup and "hamekatsu" style scouting.
He reached out, his hands brushing against her warm, tanned skin as he gently guided the rod tip down, then flicked the wrist. Pop. The line came free.
The Setup: Using various plot devices—ranging from gambling bets to "teaching" scenarios—the protagonist gains leverage or proximity to the girl.
The terms you've used suggest: