Not Good! the Sister Next Door Is a Yandere!

[Yandere + kidney transplant + daily life + single female protagonist + brother and sister] My name is Chen Xingran. I am a college student who has graduated two and a half months ago and has not yet found a job. I thought I would live an ordinary life like everyone else, but I didn't expect that the beautiful sister next door, Dragon King, who had been away for many years, would return. Um, I made a mistake, it's the return of the beautiful neighbor girl suffering from bipolar disorder. She said she always liked me and wanted to be a girlfriend for this poor guy like me. At first, I refused solemnly. But then it fell. There was no way, she gave too much. How can a man refuse to give a girlfriend a top-end supercar, a game console, money, or buy you clothes? I can't refuse, she loves me too much. He loved me so much that he hung me up and whipped me, scaring me so much that I ran away all night... She is the devil, crazy, monster! "Don't come over!" "Brother Ran, Lieyan will love you very much!" ... PS: Both the male and female protagonists are adults, the plot is very exciting, please move to the main text!