When Different Worlds Collide

7 Heroes, 6 Antagonists, 5 Parallel Worlds, 4 Guardians, 3 Core Lands, 2 Lovers, 1 PURE HEART
The Demons, Angels, Animals,Vampires and even Humans co-exist with each other though not allowed to be intimately-related to other kinds. It Was a Rule.
What happens if someone breaks the rule.
Then what about the said rule?
[ONGOING o/////o]