(Yuanzhikong) the Yandere Brother Falls in Love with Me

This is a story about sexual transformation + blackening + stupidity. The incompetent time-travel girl Kasugano Yuu returns to the rural town with her sickly (?) Cute brother, but she doesn't know that her brother is actually an invisible sick girl. So when Yuu, the energetic girl, decided to fall into the arms of her friends, her brother turned black. Qiong: ⁄(⁄+⁄+⁄ω⁄+⁄+⁄)⁄Sister, let's do something fun~ Yuu: Σ (ﾟдﾟllll) Huh? ! Ehhhhhhhhh-? ! ! PS: 1. The heroine didn't know about Yuan Zhikong's amazing episode [Beep——], so the plot was reversed (don't hit me if you don't research it). ++++2. Qiongmei becomes Qiongdi (yes, this is my bad taste). ++++3. The heroine's miscarriage is not the original character of Yuu, a silly elder sister (who is also very strong). ++++4. However, there is no female supporting character, well, all the female supporting characters are as obsessed with the plot as Yuu. Conception: