Dead End on the Six Hundred and Sixty-Sixth Floor

Tsubaki Mizushima, the Super High School Level Nun, was found guilty of murdering Shiori Kagome and Nobu Hamesaki in Chapter 8. Her execution was known as Dead End on the Six Hundred and Sixty-Sixth Floor.

Execution
The nun was on what appeared to be the outskirts of an old, worn, cobblestone town; the sky blued eyed girl looking about in confusion. A hedge maze rested before her, but she seemed reluctant to enter the foreboding plant structure. Suddenly, there was a thundering sound heard from behind the female's form, causing her to turn around abruptly. It was a crowd of Monokuma, each wearing pilgrim-styled hats and clothing as they charged at her; wielding pitchforks and lit torches.

The girl was shocked by the sight, fleeing into the hedge maze when she was left with no other choice. The angry mob followed the nun throughout the twists and turns of the lush puzzle, before the thorny walls of the structure started to close in on Tsubaki. She started to sweat as the thistles closed in on her, but, just as she was about to be squished, she saw something just before her in the distance.

It was a giant, shining staircase; seemingly leading up into the clouds above. With a smile, she rushed towards the flight of holy steps. However, just as she was about to place a foot on the first step; the ground below her opened up, and she fell inside.

She was deposited into a chrome elevator, music of said type filling the area as the roof closed up. The nun stood slowly, glancing around in suspicion before she heard a ding. She looked up to see the 'Next Stop' counter start to rise, before it sped up immensely. With a deeper ding, it stopped on the number 666.

Suddenly, the elevator started to rocket downwards at am immense speed; so fast that the friction caused it to catch ablaze.

The nun started to sweat from the heat, expression darkening as she was slowly but surely enveloped by the flames. Just as this happened, the elevator hit the ground with an explosive crash.

All was silent for a moment, before the still burning elevator let out a soft ding; opening its doors to reveal nothing but ashes, the counter still displaying 666.