My Sweet Little Sister Is a Rebel

[A refined, scheming young master and a sweet girl with a rebellious streak] [Mutual pampering | Healing romance at school | Mutual devotion | Devoted only to each other, 1v1 | Incredibly, incredibly sweet] Lu Chengzhou returns to the capital to catch up with his buddy Si Yan. When he opens the door, he finds his little sister Lu Mianmian sitting on top of Si Yan. Lu Chengzhou: “What are you two doing?” At the sound of his startled cry, the pair on the sofa look toward the door. Seeing her own brother, Lu Mianmian hurriedly says, “Brother? Let me make excuses for myself… I mean, explain.” Still stunned, Lu Chengzhou ignores his sister and asks his friend Si Yan instead, “Yan, were you forced into this? If you were, just say the word. I’ll risk my life to save you.” Lu Mianmian is speechless. Did he forget which one of us is actually your little sister?