Gray's Links
Tuesday is Aias' only brother and youngest sibling
Aias is Tuesday's only brother and eldest sibling
Shizuku is the 'overworld' existence of Sumi. The two can be counted as twins, the same person but in different dimensions, or two sides to the same person. She can be considered 'Yang' while Sumi can be considered 'Yin'.
Sumiis the 'overworld' existence of Shizuku. The two can be counted as twins, the same person but in different dimensions, or two sides to the same person. She can be considered 'Yin' while Shizuku can be considered 'Yang'.