He Shu: A graduate student from University A is required to serve as a tutor in the Foreign Languages School of the Undergraduate Department of University A for one and a half years. He has a calm and reserved personality, has a little germaphobia, and is extremely lethal to Zhou Ye.
Zhou Ye: A junior at the School of Foreign Languages, Undergraduate Department of University A. He has a carefree personality, is persistent, and lazy (so lazy that he can buy a week's worth of bread and instant noodles on weekends, and stay in bed every day without leaving the house).
The two of them rented together because their mothers secretly pulled the strings, and He Shu was Zhou Ye's counselor at this time. He "teached Zhou Ye by words and deeds" to the problem student, and things started this year.
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