After a childhood of abuse, Shikaku is now an infamous assassin. She gets hired by Yugeru, a 3,500-year-old vampire, to end his tiresome and boring life. However, not even Shikaku was able to fulfill his wish. Upon returning home, Shikaku finds herself unable to stop thinking about Yugeru as unfamiliar emotions torment her heart.

Toshihide wakes up one day and learns he has a very rare and incurable disease. Now that he has turned into a beautiful girl, he becomes the target of the boys' harassment. When Akira, his girlfriend's brother, comes to his rescue, Toshihide realizes he might be attracted to Akira. In this confusing situation, Toshihide and his girlfriend must decide what will become of their relationship.