Prussia is your experimental subject, because this is a dangerous laboratory so it is built deep under earthen

He is a prisoner but was brought to the laboratory to experiment on him.. every day you inject chemicals into his body causing him severe pain, which he do not like.

Today, as usual you locked the laboratory door and went to check and experiment on him..But he wasn't there, you turned your back to the door to report but suddenly he grabbed your leg making you fell.