"You have no idea how dangerous this experiment is." Turns out, Yuma should have given V's words more than a passing consideration. When the portal to the Astral world begins to act up, it's far too late. Yuma is gone. In another time, thirteen-year-old Kaito Tenjo, still mourning his mother's death, has one wish: to finally make a friend. Then a portal opens right above him...

In a universe where you feel the same pain your soul mate does, the fact that Kaito is stuck with an hyperactive teenager as his fated one can really mess up his work day. Not like he is an easy soulmate to have either. Thankfully, Yuma was always the forgiving type.