Sasaki's heart beats faster every time he looks at Kawaguchi sensei. He puts her on such a high pedestal that he even reveres her as a goddess. As he is attending supplementary lessons over spring break just to see her, an armed man bursts into the classroom. Holding the students hostage at gunpoint, the man makes a selfish demand of Kawaguchi sensei, but Sasaki jumps right in front of the gun.

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.