Ugh.. I hate his sister. From what I can see is the treatment money all come from the mc and from mc pov it is true for him to be greedy for money since it was the only way to make his dad healthier. Meanwhile the mc sister only blaming him for giving only money and want mc to give more effort. Well it's not wrong but he also have the live to lead and the mc never blame his dad or his sister or release his stress while going through the social bullying instead his sister blame him not give him emotional support