Her heart is not beating. She clarifies it on the same panel saying her heart has stopped.wait her heart was beating?!? isn't she an undead? that feels important
So love would revive her?
Yeah. Given the seal on the face and the supernatural shit going on to revive her, I'm guessing there is a true love clause in that dark magic pact. Or maybe she is only mostly dead. That makes a big difference of course:Nice foreshadowing, I'm betting on this romcom and lucky pervert moments slowly making her heart start beating again and she actually comes back to life for good at the end of this story.
And it wouldn't have happened if she continued to stay isolated.