This series begins in a promising way. Big brother who dropped out of school to take care of his little sister has problems at work. He then learns of a high school that he can attend as a part-time student. Some typical discrimination against the "lower classes" shows up immediately.
It's what happens later that makes this totally disgusting. A female character who is hired as a tutor is groped, sexually harassed, verbally abused, then told that the males involved are "just kidding" and it is implied that is it bothers her, it's her fault.
see this manga as good only for kindling in my fireplace.