Konoe and Tatsumi explain to Tsuzuki on the current investigation. Apparently there is an increase in the number of unknown deaths in Nagasaki, the area Tsuzuki covers. Tsuzuki is told his new partner will meet him later, and the younger GuShoShin will be helping him with the case until then. Konoe asks Tsuzuki to buy some honey cake for him, and Tatsumi gives Tsuzuki a spending book, limiting him to only 3,000 yen per day. {Tatsumi: "I won't allow unnecessary spending."} [The honey cakes Konoe refers to is one of Nagasaki's famous local products. They are called "Nagasaki kasutera" or "Nagasaki Castella/Castilla."]

Konoe meets with the Earl. They decide that people change by encounters and it would be good for both Tsuzuki and "him". ["Him", of course, turns out to be Hisoka.]

When Tsuzuki finally arrives on Earth, he decides to go eat before his new partner shows up. [^^;;;] A scream stops him, however, and he rushes off to investigate. He collides with a woman with white hair and red eyes, and wonders about the lipstick mark she leaves on his collar. However, he soon finds out the lipstick mark is actually the blood of another "vampire case" victim. Realizing the woman may be the culprit, he chases after her. On the way, GuShoShin and him are separated. Tsuzuki goes into a church and meets Muraki, who has been crying. Tsuzuki asks him if he had seen a woman, to which Muraki replies no.

Tsuzuki thanks him and leaves the church to continue looking for the woman, but as he is wandering around the streets, someone points a gun at his back and stops him.

To celebrate their meeting, the trio goes to a Chinese restaurant. Tsuzuki tries to be nice to the boy, but the boy has a real attitude problem. After some inquiries, Tsuzuki learns the boy's name is Kurosaki Hisoka, and he has died of an illness at age 16. Hisoka wants to know why an elite like Tsuzuki would want to work as a Shinigami, and GuShoShin bursts out laughing. He explains that Konoe has duped Hisoka into being Tsuzuki's partner because no one else wants to pair up with Tsuzuki-the-lazy-bum and it's a rule for Shinigami to work in pairs. Already annoyed by the deception and Tsuzuki's indifference in the matter, Hisoka is further provoked when Tsuzuki eats his steamed bun. He retaliates by eating Tsuzuki's food, and a battle of food starts. {Tsuzuki: The grudge of food is deep, especially with me.} Hisoka manages to get the last piece of food, only to realize later that Tsuzuki has added chili sauce in it. He grabs the closest drink and gulps it down before Tsuzuki can stop him. The drink turns out to be Tsuzuki's sake, and since Hisoka has no tolerance for alcoholic drinks, he falls down drunk immediately. [Is it me, or are they being very immature here? ^^;;;]

Tsuzuki takes Hisoka to a hotel. [::coughs:: Nothing happened. Darn.] After putting him to bed, Tsuzuki comments how Hisoka looks kind of cute when he is keeping his mouth shut. GuShoShin thinks it is sad that someone so young would be a Shinigami, to which Tsuzuki says he must have his reasons. Just when Tsuzuki admits to being somewhat immature before, Hisoka talks in his sleep. {Hisoka: "Tsuzuki no bakayarou! Don't think this is the end..."} Tsuzuki takes it all back after that.

The fireworks outside alerts them to the preparation of the Nagasaki festival, so they turn on the TV to watch the broadcast. A reporter introduces the famous Hong Kong singer Maria Won, who has come to Japan for the fair. Tsuzuki notices the similarities between Maria and the woman he has met earlier, and decides to investigate further. He asks GuShoShin to research something for him.

The next morning, Hisoka has a hangover and Tsuzuki gives him a cold drink. [This is the first time Hisoka calls Tsuzuki by name, but he still hasn't accept Tsuzuki as his partner.] They go to the television station, planning to look for Maria there. GuShoShin has done the research like Tsuzuki asked, and finds the date when the vampire cases started matches the date when Maria first arrived in Japan. Hisoka asks when did Tsuzuki find the time to investigate all this, to which Tsuzuki replies, "while you were occupying my bed." Hisoka blushes. [::swoons::]

GuShoShin goes back to his library duties, and the remaining two break into the station. They find Maria's preparation room to be empty and in a mess, but Hisoka feels Maria's whereabouts through his empathy abilities. They arrive at the warehouse place just before Maria claims her next victim. A monster appears and Tsuzuki defeats it by summoning Suzaku. Although Hisoka is annoyed that Tsuzuki keeps calling him boy, he is nevertheless impressed by Tsuzuki's power.

The two go back to Enma Cho, where they learn Maria has committed suicide two months ago. Elsewhere in a dark room, Muraki cradles Maria's face and tells her all will be well if she does as he says...