Matriarchy: Why Are They All Yanderes?!

(Slice of life + yandere + female-dominated world + multiple heroines) After suddenly transmigrating to a female-dominated world, Xu Luo finds he has an older sister now. At least men don't have to give birth in this world, so he can live with it. All he wants is to enjoy life, but he soon discovers that, for some reason, more and more girls keep showing up around him, and they all seem to have feelings for him. To get away from them, Xu Luo can only pretend to get a girlfriend. Unfortunately, that seems to make everything worse. Cool senior student: “That's fine. If I can't have my junior's heart, having him is good enough.” Older sister with no blood relation: “Your sister is all you need by your side.” Childhood friend who came out of nowhere: “Xiao Luo, didn't you promise you'd marry me when we grew up?” Fake girlfriend: “I want to make this relationship real.” Wait, why are they all looking at me with hearts in their eyes and walking over with machetes?! What? They're all yanderes!