The Sakurai siblings lost their parents at a young age. The older sister, Mami, continued to strive and graduated from junior college, becoming an OL. Now she has a husband and is letting her brother Masato, who is studying for exams, live with them. Mami and her husband dote on Masato, their only family. One day, they receive a message from a man named Takimoto. 'Your brother messed up our boss's woman.' To settle the matter, Mami and her husband are summoned by Takimoto…
