Assemble! Protect Our Beloved Big Sister

Tang Su just wants to keep her head down, be a well-behaved student, and study hard. But before she knows it, she's become everyone's beloved big sister. Who started the rumor that my Tang-jie has no connections and is easy to bully? Ah... sorry, Tang-jie really doesn't have any connections, because she's her own strongest backer. Tang-jie seems pretty poor, poor enough to work several jobs. She holds a grudge over everything, even little slights that could easily be brushed off. And she's fiercely protective of her own. You dare mess with someone Tang-jie cares about? This big sister will show you exactly why flowers are red.