The infamous room which started the training section so long ago. It is a plane of existence on its own, existing both within and outside the confines of reality, and where a single cloaked mute man dwells. The man has trained many A-ranked and S-ranked members of all factions: some infamous, some heroes, but all of them are known. People like Strife have walked into the very confines of the room and walked out changed.

As the name states, it is a four-walled 'plain' white room. The man lives as one with the room, able to change its contruct into anything of his choosing to better suit the training in which the trainee is to endure.

(( Training here is to be done by Under Circumstance or another long-term crew member. ))