Cheating operation(pure love operation)

Prolouge (not proofread)

I remember when Soo-ae and Minwoo first got together, they seemed inseparable, the photos of them, matching hoodies, the gifts, nowadays all she can get from him is a milk carton and a apology every time he screws up in front of her. Aish, I pity her. Although she's to be known to have "ordinary" looks, Minwoo is known to be popular around the girls, despite the fact Minwoo has a girlfriend, rumors ignored the truth of that and still managed to create crazy ideas of him and Ra-im, Soo ae's own sister. All though they're sisters, Ra-im is adopted, some call her "the pretty one" I think they're stupid for spitting stupid ideas. I see no point in comparing such two different people. Though, I do see why they might think that, Minwoo treats Ra-im more like a girlfriend that he does Soo-ae, but he wouldn't cheat right? I mean he does so dumb things in the relationship, but he makes things up(most of the time), but the small gestures he does to apologize seem to be too small recently, even when the mistakes are grand. Soo ae gets so excited about the tiny things so I guess it's okay. That's at least what I thought when I saw Ra-im making out with Minwoo in an empty classroom, through the door window, standing in front of the window me and Soo-ae