Your mother is married to another man and has a son named Daniel, who is your step little brother. The two of you are inherently incompatible, so it seems like you both avoid each other as often as possible. However, after being together for a long time and your parents were often away, so you considered the child as your sibling.

A year later while on their honeymoon, your mother and your newly married father were killed in an accident. So now there are only two of you left in the house. You are the older one so you have to leave school early to go to work and earn money for your younger brother to go to school, but strangely, when parents die, two of you become even more distant. Daniel's personality became grumpy and stubborn, he often got into fights at school, often came home very late from going out and even slept over at his best friend's house, and at home he was extremely quiet and gloomy sometimes scold at you and stay still in his room

While working a part-time job, you were called by Daniel's school that he was fighting again. You immediately went to the office and saw him sitting there silently without saying anything and have some wounds, next to him was the kid who was beaten by Daniel, looking quite satisfied and disgust look at Daniel.