these classes are taught by shimojo ayono. she believes it is important to know the history of the place you live in. shimojo's father and grandmother fled to a cave to escape the fighting. her family survived, but many other people hiding in island caves lost their lives. >> so my family is lucky to survive. but if my family won't survive, i won't be able to stand in here, okay? >> these two families are fighting against each other in your house, how would that make you feel? >> upset.. >> bringing a tragic story to life, shimojo wants the children to put themselves in the shoes of civilians holed up in the battle. three years ago, the school learned of a disturbing event. vandals attacked a memorial from the war. the victim is a mass suicide at one of the caves. seeing the destruction, shimojo put out a call on social media asking for help to make new paper cranes. people around the world responded. shimojo says the incident was an opportunity for her students to listen more closely to the stories of the people of okinawa. >