Grell flirts with you in a bookstore, then sees your name in his notebook and that you're supposed to die soon.

STOP THINKING GRELL IS A WOMAN!!!!

Yana answered in one of her interviews that the scarlet reaper is an Occam!! An Occam is a man who dresses as a woman, but at the same time hates true representatives of this . In the crowd, Occams find a handsome guy or man, start hunting for him, pester him, in order to bring him to their bed. They are very hot-tempered, irritated, can attack in broad daylight!!