She is a young girl with strong psychic powers and belongs to the Amakawa Hiichiro Agency. A powerful spirit is in love with her, and that spirit cursed her so that if she has not found a lover by the time she turns 20, he will take her away. She has a flower-shaped birthmark on her chest as a result of the curse. Her energy for exorcisms is derived from eating sweet foods, such as cake. 

Rasetsu Hyuga works for an exorcist agency where she uses her special powers to banish evil spirits. There's a story behind the red flower mark on her chest though--it's a memento left by a powerful spirit who vowed to claim her on her 20th birthday. Unless Rasetsu can find true love by then, she is fated to become his...
<br><br>
Yako Hoshino, a young man with spiritual powers of his own, comes to the agency seeking help with a possessed book. He's seen a lot of strange phenomena in his day, but the last thing he expects to see is Rasetsu bearing a striking resemblance to his old love Yurara!
<br><br>
(Source: Viz Media)