The moment the light went off, Kanae sprang up from her position. In a speed that ordinary people was unable to follow, she reached the door and sped up to the corridor heading to the underground prison. It was a complete darkness when she walked inside.
Remembering the part of the layout, she dashed deeper inside, trying to find way to go down more and more. Whenever she found stairs, she would dash to head towards the deeper part of the prison. Thankfully, when she hacked the cameras, she managed to find the way inside.
Although the labyrinth seemed complex, it was rather simple. There were only two way in and out, one at the left and the other one at the right. When someone came inside, they were faced with the wall and have to pick either right or left. Without any light, it would be a total darkness for them.
On the prison above, the people were startled when the light went off suddenly.