Curate, connect, and discover
I have the the idea of Vivia being a supernatural as a vampire and Yuma being a supernatural as a ghost in which he still has his forte and shinigami being his friend
While Vivia also still has his forte.
them beside shinigami having the ability to disguise as human,the only trait being out with Yuma is that he cold so he tries not to touch people unless he needs to and for Vivia he can stand in the sun but not to long or else he gets sick
But that a random thought that was just inspired by TBHK/toilet bound hanako-kun