Sabatini Espresso, nicknamed "Coffee," is the Italian daughter of a mafia boss. She became stranded on a deserted island with 14 other young women and Kazu after their luxury steamship encountered distress near an exotic island.

Born March 3 with blood type B, she has yellow/blonde hair, red eyes, and measurements of 84-59-85 (bust-waist-hips). Personality-wise, she is slightly bratty and stubborn, yet fundamentally kind-hearted and likable. She displays a tendency for minor clumsiness, often leading to precarious situations requiring Kazu's rescue; he typically negotiates a reward for his help.