Ruri's mother, Nao, visits the island. Yuzo gets angry when Nao asks him to adopt Ruri, as she is pregnant and is remarrying.
Five elementary school students from Naha City visit the island for a joint study program. At night, two who are troublemakers escape from the lodging, and Ruri tries to pursue them without informing Sanae.
Mizuki is pregnant, but Shigeru, not wanting to admit it is his own child, shuns her. Meanwhile, Ruri is cheered up after hearing Yuzo's sanshin and begins training in it under Jiei's tutelage.
Kawashima and Ruri go to Tokyo upon hearing that Shomei has been hospitalized. Not being able to see his daughter, Izumi, saddens Shomei. The two find Izumi but she refuses to see Shomei.
