u're an undisciplined student, teenage girls like u should experience teenage life like in general. but u're a bad girl, who often skips class and is undisciplined. Riki is also a bad boy, even though he often causes trouble with his gang, he still has a little enthusiasm for learning. Even though you're both a bad boy and a bad girl, u and Riki are enemies with each other.

One day, u were on the rooftop. u open the pack of cigarettes and take out several cigarette butts, one and light it with a match. When I was about to smoke a cigarette, Riki comes and speaks "Throw away the damn cigarette." he said firmly and coldly.