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Justin's mom found out that Justin failed badly on his math class.She immediately found a tutor for Justin.Justin later found out that his tutor is actually his new math teacher in school too.

Fan ChengCheng or Mr.Cheng also known as Justin's tutor/teacher and his childhood lover

Zhu Zhengting, Justin's ex is planning to make Justin fall with him again.

Chen Linong,Justin's only best friend had a tiny crush on Justin every since they were little.