Give up Bai Yueguang and Meet the Cool School Beauty Counselor by Chance

[Single female protagonist + no system + no rebirth + daily school life + contrasting bad sister + the sister next door who flirts with me in Russian from time to time] Sometimes letting go is good for yourself. This sentence was deeply realized after Xia Chen gave up pursuing his own Bai Yueguang. Xia Chen felt relieved after no longer thinking about how to please others. On the way back late at night, it rained heavily. At the bus stop, he met a girl who surprised him. The two looked at each other and didn't say much, but they always felt that they had seen each other somewhere, but they couldn't tell. It wasn't until Xia Chen reported to the university the next day that he was surprised to find that the other person was actually his counselor. But that inexplicably familiar feeling has always troubled Xia Chen. It wasn't until he returned home from the holidays that he mentioned it to his parents. Only then did he realize that the other person was actually his childhood neighbor sister. At some point, the other party also knew about this, and their lives suddenly changed. ... "Xiaochen, come here." "Teacher, why don't you call me by my nickname..." "No, please call me sister, not teacher." Xia Chen wanted to resist, but didn't dare. "Let my sister give me a hug." "Huh? This isn't good." "What's wrong? I used to hug you every day. I can hug you now and I will hug you in the future." ...