Ai o Shiru Tame no 9-kagetsu

Mary, having lost her mother at a young age, grew up ostracized by her spiteful stepmother and stepsisters and was eventually forced out of town after being accused of a terrible crime. She now lives alone on a deserted island owned by her friend. One day, a terrible storm sets in, and she finds an injured man washed up on the beach. As she and Ben wait out the storm, they end up warming their hearts and bodies. A single night of romance to heal long years of isolation. That’s how Mary tried to think of it when Ben left the island. But many weeks later, she finds out that she’s carrying his child!