Actress Umika Kawashima (16) and actor Aoi Nakamura (19) are co-starring in a BeeTV mobile drama titled “Sekai no Owari ni Saku Hana.” The drama tells of the painful first love between Taiyo and Saki, two youngsters who have been suffering from kidney disease since childhood and are waiting for transplants. Kawashima and Nakamura worked...