The defendant's appeal is dismissed.

1. The sentence of the court below (five months of imprisonment) is too unreasonable.

2. The Defendant reflects on the crime.

However, even though the defendant is in the execution of imprisonment, the defendant committed the crime of this case in which other prisoners are assaulted in prison, and the degree of violence in use is not weak, so the punishment is required.

In addition, the sentence of the court below is too unreasonable in light of the following circumstances: the defendant's previous conviction, age, character and conduct, environment, family relationship, motive and circumstance of the crime, and circumstances after the crime.

Therefore, the defendant's assertion is without merit.

3. In conclusion, the defendant's appeal is dismissed in accordance with Article 364 (4) of the Criminal Procedure Act since it is without merit. It is so decided as per Disposition.