There's Something Wrong with My Girlfriend

There were still three months left before the college entrance examination. The middle-school student who was passing by was called away by Lu Zhaoru, the class beauty whom he had admired for a long time. She said that he would tutor his academic performance and asked him to pretend to be her boyfriend. If he was admitted to the same university, he could become a full-time student! Good things come from heaven, but Gu Pan always feels that something is wrong. You know all about my preferences, but you installed a camera in my house? If you just buy a lottery ticket, you can win a million. Are you sure? I hit all the questions, but you still failed? No, do you know what size of underpants I wear? Facing his girlfriend who surprises him everywhere, Gu Pan just wants to ask: "Sister, where did you buy it?"