: 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 tendencies" and frequent beatings from his sister.
: The younger sister and sports specialist with a short fuse.
: When she finally corners a pleading Wan Sui, instead of attacking him, Shi Miao suddenly apologizes for hitting him previously and offers him cookies as a peace offering.
: A wealthy transfer student who wants to be treated normally and is friends with Shi Fen.