Why Are You so Stupid?

*The story of a yellow-haired boy who transformed into a handsome male high school student and chased his cute sister with a round face. "You weren't in self-study last night, what were you doing?" Lin Jianyang put his hands together like a pistol, "Say! Or I'll shoot you!" Then he "loaded the gun." Qin Huai raised his hand helplessly: "Give me extra lessons for the teacher's little niece." Upon hearing this, Lin Jian raised his eyebrows to the sky: "You can give tutoring lessons to the teacher's niece despite your grades? How old are you?" "The second grade of junior high school, you go ahead." "Oh... Ah?!" … "Qin Huai, if you have the ability, say it again! Come on!" ·Secretly in love with each other ·Black belly x little tsundere Intention: Grow together