Blood Honour

Blood Honour is a WW2-drama anime anti-war film by Satoko Samo.

Plot
Three Japanese soldiers and three American soldiers have to survive the conditions of a faulty submarine that stopped working, but one of the Japanese soldiers, 19-year old Yukio Hamakaza, falls ill, and it's up to American soldier Charlie Minns to help him while the four other soldiers try and find a way to send a radio message to rescue them.