Rengoku Jima: Kyokuchi Renai

Five students, 3 women and 2 men, was ashore a remote island, survivors of their sudden ship sinking. Finding themselves in this extreme state instinct and conscience intersect and collide! Crossing thoughts, feelings of love and hate mixed with trust and betrayal. A story of uncontrollable libido and murderous intent...
(Source: Comic Valkyrie, translated)