A True Rhombic Comes in Time

Two decades ago, the world was forever changed when the Door, a mysterious dimension filled with monsters, appeared all over the world. Select teenagers receive the Invitation, which gives them the access to the Door along with the superhuman power to fight these monsters. These teenagers, named the Rhombics, earn fame and fortune along with the chance to save the world from these monsters.

Leah, a 16-year-old girl with a terminally ill sister, receives the highly coveted Invitation. Becoming a Rhombic could be the only chance to make their lives better and even save her sister. However, when she becomes a Rhombic, Leah is devastated to learn that she is unprecedentedly weak.

But an accidental encounter presents her with a weapon that could change everything. With a grudging help from Ryder, a famous and powerful Rhombic, Leah makes her own path in the dangerous world of deadly creatures.