Why Is There Something Wrong with My Sister?

[Urban Daily] + [Sister and Brother] + [Slightly Crazy Sister] + [Sweet Sister-Sister Love] + [No System, No Gold Finger] + [Non-Rebirth] + [Sister pretends to be a sick girl to scare her brother] ... That day, it was raining very hard outside the window... Gu Yuan thought that his sister was no longer angry and was about to go to bed, but Song Chiyu pushed him down and sat astride him, with the back of the knife pressed against his neck. His face was shy, but his eyes were full of madness... "You dare to bring other girls home, right?" "No, he's just my squad leader here to deliver something..." "Sister, what are you going to do? Woohoo..." ... *Gu Yuan: I have a sister who is not related by blood, but I don't know when. I actually had other feelings for this childhood sweetheart sister. At first, I just thought I was crazy, but gradually, I found that something was wrong with my sister. What was going on? ... *Song Chiyu: I have a younger brother who is not related by blood... One day I was drunk, and when I woke up, I found that I slept in the same bed with him. Although nothing happened, the hidden feelings in my heart gradually became uncontrollable and out of control... I really wanted to... Eat him... ... *Lao Gu: I am the father of Gu Yuan and Song Chiyu. I found out that my son seems to be gay recently, which is really unfortunate for my family...