Japanese Girls at the Harbor(港の日本娘)

Set in the port city of Yokohama, two girls, Sunako and Dora who attend a Christian school, pledge to be friends. But when a youth named Henry appears on his motorcycle and offers to take Sunako for a ride, we know that this friendship won't last and that the lives of both girls will change in ways they are barely able to comprehend, and can do little to change.