Why is Oma Kokichi restricted?

Does the subject want to ask "Why does Oma Kokichi wear a restraint suit"? Be accused of some kind of crime.

In the game "New Bullets Break V3, People Kill Each Other in the New Semester", Oma Kokichi wears a restraint suit because he is imprisoned in the school and accused of some kind of crime. In the game, Oma Kokichi is a very clever character, who can gain insight into the lies and truth of other characters, which plays a very key role in promoting the plot of the game. "New Bullets Break V3, People Kill Each Other in the New Semester" is a reasoning adventure game developed by SpikeChunsoft and released in Japan on 20 17 12.