• Chisuke and Kyu have been close friends since they were kids even developing some feelings for each other at the age of 12. It all changed when they were all mutated into Blood Mutants. At first Chisuke thought Kyu died from the accident but it is later revealed she indeed was mutated into Blood Mutant. But like Chisuke, Kyu refuses to harm a living being even though the craving for blood is slowly worsting. Even though she still loves him she also wants him to promise her if she ever harms another being he would have to kill her.
