What if Yui had a sister who is the total opposite of her and who was once a member of a street gang who stole and killed people for money? Meet (F/n) (L/n), who was left all alone after the death of her parents and her younger brother who died in a house fire when she was 9. (Y/n) was taken in by a gang who treated her as if she was one of their own. (Y/n) stayed with them for a year, she was trained to kill and steal if necessary but then, one night, the gang leader could no longer look after (Y/n) and he left her at a Chruch where Seiji Komori, a priest and a vampire hunter, adopted her. (Y/n) thought her life was going to get better, however, her nightmarish hell was only the beginning. After being adopted into the Komori family, the priests and the nuns at the church learnt about (Y/n) being part of a street gang and they tried to make her pure and Seiji hardly paid any attention to her instead he ignored his adopted ex-street gang member daughter and he focused his attention on his other daughter Yui. (Y/n) had enough of the abuse and neglect so, she ran away from the church and she never contacted Yui or Seiji ever since. What will happen when (Y/n) meets the vampire brothers along with the Mukami brothers and the Tsukinami brothers? Will she finally found the happiness that she had longed for? Find out in this X reader story!

A month has passed since (Y/n) started living with the Sakamaki brothers and her 'annoying' sister Yui. Things were peaceful for a while after the incident with Ritcher and Cordelia, however, when (Y/n) was living with the Sakamaki brothers she had learnt that she's the reincarnation of a woman named Aiko, who has demon blood. (Y/n) and the brothers have no idea where the demon blood originally came from but, on one night, when the brothers and the two sacrificial brides were on their way to school a car crash happened and that's when they met four mysterious figures, who are the Mukami brothers, and they were vampires just like the brothers but they were not purebloods. One night, (Y/n) and Yui gets kidnapped by these four handsome vampires and they started craving for their blood in order to achieve their 'apple of Adam' plan that was created by Karlheinz, the Sakamaki's brother and the demon King, however, while (Y/n) was living with the Mukami brothers, (Y/n) began to discover some changes as her story progresses. What will happen when (Y/n) gets along with the Mukami brothers? will she find out who she truly is? who are her old friends? find out in this second story of 'Yui's Sadistic Sister'!

(Warning: Yui's a bitch in this book and contains mature content) Asami Sakamaki is the youngest child of the Sakamaki family where she is showered by, love, affection, and care. She enjoyed her happy life with her wonderful and loving brothers, however everything changed when one girl named Yui Komori stole the love away from her and her older brothers where they no longer give her the love and care that they been giving her and start to forgot about her. Heartbroken to see her brothers taken away by one girl where they give her love just like they did to their sister, Asami ran away from home until she met and lived with the Mukamis. For the first time, she felt love and affection from the Mukamis, but that didn't last long when she realized that they're using her as a product called Eve. She then runs away once again where she ran towards the dark forest in the night until she was caught by the cops and arrested her for "harassing" a person due to her lack of blood. Once she gets to jail, she is send to Nanba prison where she is now imprisoned in the most toughest jails in history. Now going as Chiyo Harada, she fears of getting neglected or lied to in Nanba Prison due to her heartbreaking experience with her brothers and the Mukamis, but will it changed her? And what if the Sakamakis and Mukamis tried to look for her? Find out in the Diabolik Lovers and Nanbaka fanfic! Started: Jun 9, 2017 Completed: Nov 4, 2017