Quiet Classroom is a story about the lives of four orphaned teenagers with troubled pasts, enrolled in a new experimental rehabilitation program called the "Quiet Classroom."

You take on the role of Haruto Saito, a former Japanese soldier and veteran of the Third World War, who suffered a serious injury during the conflict. After returning home, Haruto struggles to adapt to civilian life and faces the threat of being sent to a veterans' care facility for compulsory treatment.

However, everything changes when a mysterious stranger offers him an alternative: instead of the care facility, he can become a mentor in the "Quiet Classroom."

Whether Haruto can help himself and the four teenagers confront their inner demons is entirely up to you.