Figure~ Vietnam x Japan Cast list
Bold= first names, Italics=general role
Vietnam as Lien Chung
Female protagonist: Ninja, considers Mei and Kaoru her younger siblings because she grew up alone
Japan as Honda Kiku
Male protagonist: Ninja, adoptive brother to Yao, Kaoru, and Mei
China as Wang Yao
Former soldier, captured to work for emperor, big brother to Kiku, Mei, and Kaoru
Taiwan as Wang Mei
Ninja, considers Lien as an older sister, younger sister to Yao, Kiku, and Kaoru
N. Korea as Im Hyung Soo
Ninja, older twin brother of Yong Soo
S. Korea as Im Yong Soo
Ninja, younger twin brother of Hyung Soo
Hong Kong as Wang Kaoru
Ninja, related to Yao, Kiku, and Mei
Macau as Wang Cheng
A scholar who works as a spy, Yao's older cousin
Thailand as Kasem Chao
Moderate ninja skills, more of a skilled geographer
Mongolia as Batukhan Ulan
CinnamonPie29594