Write an interesting, riveting, action-packed short story in the form of a crossover fanfic chapter between Jojo's Bizzare Adventure and Elfen Lied with plenty of dialogue, action, and exposition, in which Jotaro Kujo replaces Kaede/Lucy/Nyu's younger brother and the strength of his stand, Star Platinum, is due to his mother Holly being infected by Kaede's vectors before she got pregnant with Jotaro. After the defeat of DIO in Egypt, Jotaro decides to return to his life as a bancho while also deciding to wander around Japan to clear his head. He finds himself in Kamakura, where he decides to lodge at the Maple Inn during the duration of his stay. Jotaro's quiet nature and his reclusive personality catch the eye of the Inn's current operator, the stern and steadfast brown-eyed brunette Yuka, who is the daughter of the Inn's owner. But Yuka doesn't have time to dig any further into Jotaro's past, as she struggles with her incestuous feelings for her younger male cousin, the laid-back and somewhat dense black-haired and blue-eyed Kohta. 

During his time in Kamakura, Jotaro uses the opportunity to practice his Hamon, which he had seen his grandfather, the British nobleman and American corporate tycoon Joseph Joestar, use during the journey to Egypt to fight and kill DIO. He also uses the opportunity to get better control of his Stand, Star Platinum as well as the various Stand Powers it has copied due to Jotaro awakening Requirem via being cut by a stray Stand Arrow in DIO's mansion. He becomes a vigilante of sort, using his Stand and Hamon to deal with the local criminal element, always avoiding capture by the police due to his skill with the streets. Kohta and Yuka have no idea that Jotaro is the vigilante the police have been looking for, but Yuka notices a strange martial aura around Jotaro when he is staying at the Maple Inn. 

When the pink-haired, red-eyed Queen class diclonius Kaede, also known as the serial killer "Lucy", finds herself a resident of the Maple Inn due to losing her memories after escaping the Institute, becoming the childlike and kind "Nyu", Jotaro is curious about this mysterious girl who seems to have the personality and mindset of a child. His interest grows when he sees Kaede as Nyu's vectors emerge out of instinct while she is on the porch relaxing, and he begins to wonder if there is more to the supernatural than just Stands and Hamon. 

Meanwhile, Kohta takes in two girls named Nana and Mariko after finding them lost and scared on the beach with a large amount of money beside them. Unbeknomst to either Kohta, Jotaro or Yuka, Nana and Mariko are in fact  Silpelit-class diclonii sent by the Institute to capture and retrieve Kaede/Lucy/Nyu dead or alive, although their time at the Institute has left them socially inept and unable to adjust to the world around them. Nana has short, dark purple hair and blue eyes and mostly wears a black dress, while her older adoptive sister Mariko has long, light pink hair and red eyes and uses a wheelchair to get around due to her being a paralytic. Nana is kind and happy-go-lucky and tries to see the good in people. while Mariko is psychotic and somewhat easily excitable. 

While heading to the Maple Inn after an odd job one night, Jotaro encounters a seemingly ordinary man about to solicit sex from a middle school-age girl. This enrages Jotaro and he uses his Stand to deliver a brutal beatdown upon the unaware predator, before using two of his copied Stands gained from his Requirem, Justice and Hanged Man, to choke the molester to death before dismembering the would-be abuser with Silver Chariot. Jotaro then makes his way back to the Maple Inn, unaware of the look of awe on the girl's face. 

A young middle school-aged girl and runaway who becomes Yuka's ward, the black-haired and purple-eyed Mayu, later turns out to be the stepdaughter of the molester brutally slain by Jotaro that night. Since the police have no idea who killed the man or why he was slain so brutally, the case is dropped and Mayu's mother is arrested for child abuse. Mayu has no idea who unwittingly saved her from her abusive family, but is grateful to have a roof under her head and slowly begins to fall in love with Kohta, along with Nana and Mariko. Jotaro on the other hand, is completely clueless about the love lives of his hosts due to him being focused on mastering his Stand and Hamon. 

When the Institute sends its best enforcer, a psychotic ex-ROKAF [Republic of Korea Armed Forces] special forces operator turned elite SAT operative named Bando to find and locate Kaede as "Lucy" and bring her back dead and alive after Nana and Mariko fail to report back, Bando instead encounters Jotaro, who then engages him in a brutal fist fight that ends with Jotaro barely managing to knock out the insane man with a Hamon infused fist to the chin. Jotaro leaves behind a playing card as a calling card before leaving, unaware that Kaede/Lucy/Nyu has briefly regained her memories and is observing the whole thing from a far with an interested look on her face. 

The story ends with Jotaro munching on a fried egg, a few sausages and buttered toasted bread with a cup of mocha coffee as he writes in his journal about his experiences, putting down in his journal entry the strangeness of Kaede/Lucy/Nyu, Nana and Mariko's vectors and the similarity the girls share to the Oni of Japanese mythology and legend. Meanwhile, Nana and Mariko are busy cuddling up to Kohta as he [Kohta] and the girls listen to the morning radio, which causes Yuka to get jealous and Kaede to try and fight her for Kohta. However, a blushing, embarrassed Mayu manages to stop Yuka and Kaede from fighting by suggesting that they all share Kohta until he [Kohta] can marry all of them as his wives. 
