Zack is a teenager which is just graduated from the High School. Zack before, is a person who really likes to study and come to the school everyday because of his mom last wish before she pass away
"Zack...I'm really sorry that I can't give you the life like any teenagers around your age have...I hope you can forgive me...after this it might be really difficult for you to live because of I didn't know how long can I be here with you and your father is already gone since you born...eventhough your life becomes really hard or difficult, I just hope you can grant my last wish to you...that I want you to study hard and become as successful person after that so your future will become more brighter..."
So because of her late mother wish, he doesn't want her mother to sad knowing that her only child cannot grant just one wish from her...So Zack always study hard and go to school everyday because he doesn't want to miss any lecturer from his teacher.After that, when his friends which is Kai,Mike,Amy and Mary saw that Zack has more spirit to come to school everyday so they take that as advantage for them to bullied him by asking Zack to do their homework,asking for money from him and the other thing.They do this because of they know that Zack is one of the weak person which is cannot fight back.
Zack do all the things that they ordered just to keep his reputation at school so Zack can study as much as he want.
The bullies always become more intense everyday until Zack feel exhausted and he wants to fight back but he can't because he worried about his reputation at school so he always hold a grudge by himself...