Door 5 was one of two numbered doors the group first encountered. It was a sturdy, metallic double-door, seemingly heavily bolted. There was a pair of handles protruding from the center. Santa and Seven attempt to pull open the door, but were unsuccessful.
After a brief introduction of all the characters, the 9th Man held Clover hostage with a pocketknife, and with Ace's help (4+1+9 =14 =1+4 =5), opened Door 5 and entered it alone. Upon finding that the DEAD would not stop his bracelet, the 9th Man cried for help, which ultimately, was not possible. 81 seconds later, he died behind Door 5 by the bomb in his gut.
The group opened the door without entering to inspect what happened, and everyone except Snake were shocked about what they saw and June broke down crying. After a lengthy explanation, the group finally decided to enter the numbered doors.
In order for Junpei to enter Door 5, the group must first reorganize itself.
Entering Door 5 would group Seven and Snake with Junpei for Door 5, while Ace, Santa, Clover, June and Lotus enter Door 4. When Junpei chooses Door 4, Snake, Ace, Seven, and Clover go through Door 5 and Junpei, June, Santa, and Lotus go through Door 4.
Behind Door 5
Upon entering, the DEAD could be found close by to the door within easy reach. The hallway behind Door 5 was short, and ended in a thick iron plate that blocked off the path. There was only a single door to the left of the hall. This led to the 1st class cabin.