Craft a captivating and thrilling chapter of a crossover fanfic between High School DxD and Nakaimo: My Sister is Among Them with plenty of dialogue and exposition. Issei Hyoudou replaces Shogo Mikadono, while the black-haired, green-eyed, shy, and reserved young heiress Konoe Tsuruma takes over Sona Sitri's role, and the short, brunette, petite amber-eyed firecracker Miyabi Kannagi is revealed to be Millicas Gremory. Mei Sagara, using the alias "Koneko Tojou," hides her true identity as Kuroka's sister. Meanwhile, the blonde-haired, green-eyed analytical president of Miryuin's Economics Club, Rinka Kunitachi is actually <PRESIDIO_ANONYMIZED_PERSON>, one of Riser Phenix's younger sisters. The story follows Issei as he tries to balance his school life and his secret role as Himekami Lizel's pawn. Unbeknownst to most, the black-haired, blue eyed MLIF Lizel is actually Rias Gremory, the scarlet-haired, blue-eyed Gremory clan heiress. Issei must also keep the fact that he has to marry a female Miryuin Private Academy student in order to inherit his family's vast wealth while dealing with the clinginess of his younger sister Konoe and his younger cousin Miyabi, who he hasn't seen in years. The chapter should be filled with embarrassment and tension as Issei struggles to keep his secrets hidden.
Mei, also known as "Koneko," becomes envious of Konoe and Miyabi/Millicas' affection towards Issei. As a result, she invites Issei to her personal cafe, "Lyrical Sisters," which she [Mei/"Koneko"]  funds using her errands for Rias. Konoe and Miyabi/Millicas take offense to this, and a fight breaks out among the girls over Issei's attention. Rinka/Lena also joins the fray, feeling jealous of Issei's ability to attract multiple girls at once. Rias intervenes as "Lizel" and reveals that Issei is her fiancee, making the other girls part of his harem. The chapter ends with Issei attempting to escape the paparazzi and being picked up by Rias' luxury car, with Xenovia, Asia, Akeno, and the other girls cuddling up to him on the way home.
The chapter ends with Jotaro Kujo, fresh from defeating DIO in Egypt, shaking his head as he observes the reporters and civilians searching for Issei, his mind focused on finding Konoe and Miyabi due to the Speedwagon Foundation discovering both girls were victims of a series of experiments done by an organization the Speedwagon Foundation had recently absorbed before Speedwagon took it over. Letting out a soft sigh, Jotaro makes his way towards the Hyoudou House to inform the two girls about what really happened to them.
