Hiruzen no Kyoku

Another work by the master behind Human Clock, Tokunan Seichirou!
This one tells the story of Shimada Haruhiko, a factory worker who's worried about his sister's future, as she is soon graduating elementary school and he doesn't have the means to pay for her high-school tuition alone. While distracted, he causes an accident at the factory and gets fired, forcing him to find another job.
His sister, noticing Haruhiko's struggle, decides to look for a job herself, leading her to get involved with bad characters; now, as both struggle, what will happen?