Malrosa is a princess of the Athanatos, powerful immortal insect people who have been systematically assaulting Vita's island for years.
When Vita ends up fusing her soul with her, the resulting gestalt must struggle to reconcile her conflicting viewpoints and beliefs. Now in love with two homes and full of perspective her old self lacked, Vita must bring peace between warring islands... and if there's one thing Vita has always been bad with, it's peace.
This is the fourth and final book of Vigor Mortis.