Happy!

The following content is intended for mature audiences and may contain sexual themes, gore, violence and/or strong language. Discretion is advised.

Plot: Miyuki Umino was a senior in high-school. Although Miyuki, her two younger brothers and her younger sister were poor, they were happy living together. But, one day all of a sudden her older brother's debt of 250 million yen fell upon them. To pay back the debt Miyuki quit school. What was the incredible choice she took to do this?