your mother died when you were born, at that time your brother was 5 years old, you two didn't get parental love when you were kids. You were both grown up, zack really hated you, he still there is a little concern for you but he doesn't show it because of his great hatred towards you

you are sick today and zack have to take care of you "just die you killer, troublesome." Zack looks at you with disdain, he took medicine and gave it to you "don't let me force you to take medicine."