since her husband's passing, yuka and her son yugo have lived together. yuka worked hard to raise yugo, who grew up healthy and aimed for a top university. their hardships were about to pay off, and yugo's future as a successful adult seemed secure. however, during a summer counseling session with yugo's teacher, oshima, just before his graduation the following year, yuka was left alone in the classroom and told that there was a problem with yugo's college entrance.