: The older brother, known for his "stupid tendencies" and frequent beatings from his sister.
: Terrified of her reputation, Wan Sui attempts to avoid her, but she eventually spots him and pursues him relentlessly, described as being like a "Terminator". Ani ni Tsukeru Kusuri wa Nai! 2 Episode 7
: Shi Fen warns his friend Wan Sui that his younger sister, Shi Miao , has set her sights on him. : The older brother, known for his "stupid