Run Off, Miss!

(from ebookjapan):
Little Yuna's parents have both died, and her aunt and uncle are struggling to decide who will take her in for her large fortune. Yuna, completely fed up, remembers her promise to her parents on her birthday and decides to take all the contents of the safe and head for a southern island. When Yuna suddenly runs away from home, her aunt and uncle send a hitman to her, hoping that she will die on the trip. Meanwhile, Yuna heads for Rosewut, a southern island promised to Mills, the owner of the boat she smuggled out of the country, and his son Harry. What awaits her there is... Also included are "Beyond the Wind", "Sayonara Miss Sugar", "You're Intense!", and "Nana-chan".