Chromatic Doors
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Chromatic Doors, known in the Japanese version as Colored Doors (カラードドアーズ Karādo Doazu), are doors in Rhizome 9 in Virtue's Last Reward. They are similar to the Numbered Doors in Nine Hours, Nine Persons, Nine Doors. These are the doors that lead to the escape rooms in the Nonary Game: Ambidex Edition.
Rules
As with the Numbered Doors, the Chromatic Doors have their own set of rules in order to be opened that are different from the numbered doors:
 The Chromatic Doors will open automatically, and stay open for 5 minutes. Participants can check the time left until the Chromatic Doors open by pressing both buttons on the side of their bracelets simultaneously.
 Only 3 people are allowed to enter the Chromatic Doors.
 The colors of the participants' bracelets must make up the Chromatic Door's color.
 Anyone who is outside of a Chromatic Door when they close will be penalized.
 Once a group has escaped a room, the Chromatic Doors will allow anyone to enter them at their leisure.
There are nine Chromatic Doors in total: 3 on Floor A, and 6 on Floor B. The colors of the Chromatic Doors are:
 Round 1: Magenta, Yellow and Cyan
 Round 2: Red, Blue and Green
 Round 3: Three White doors.
Floor A Chromatic Doors
The three doors on Floor A are Magenta, Yellow, and Cyan. As such, the bracelets participants have in order to create these colors are Red, Blue, and Green.
 Red: Sigma, Phi, Alice
 Blue: Luna, Dio, Quark
 Green: Tenmyouji, K, Clover
Because of these set ups, the groups can be as followed:
Option A 

Option B 

Option C 

Options A and B uses a combination of the color bracelets in order to open the door with that color (Red + Blue = Magenta) while Option C uses the same color in order to open the door of the complementary color (Red + Red = Cyan).
Beyond the Magenta Door is the Lounge. Beyond the Yellow Door is the Infirmary. Beyond the Cyan Door are the Crew Quarters.
Floor B Chromatic Doors
There are six Chromatic Doors on Floor B: Red, Blue, Green, and three White Doors. The Red, Blue, and Green doors are just on the other side of the elevator connecting Floor A and Floor B, while the White Doors are in the Floor B Warehouse which can only be found after escaping the rooms beyond the other three doors.
Unlike the Floor A Chromatic Doors, the Floor B Chromatic Doors each have three rooms beyond them. However, depending on who Sigma is in a group with, only one door will open each time. This is determined by a lever similar to the one in front of the Number 9 Door, which scans the bracelets of the participants in the vicinity of it and opens the corresponding door. Because what door Sigma enters on Floor A determines the path taken for the rest of the game, it will be divided accordingly.
After Magenta Door
Colors each person has:
 Magenta: Tenmyouji, Quark, K
 Cyan: Clover, Sigma, Alice
 Yellow: Luna, Dio, Phi
Because of this, these are the options for the Chromatic Doors:
Option A 

Option B 

Option C 

After escaping the Lounge and participating in the first AB Game, Sigma has a choice of 'Ally' or 'Betray'. Choosing 'Ally' will allow Sigma the choice to go through the Green or Blue Doors. Choosing 'Betray' forces Sigma to choose the Red Door.
Ally
If Sigma chooses Ally in the AB Game against Luna, he will eventually get the choice between the Green Chromatic Door and the Blue Chromatic Door. Trying to choose the Red Chromatic Door will have K refuse to go with that choice, and stand in front of the door in order to block Sigma.
Here, beyond the Green Door is the GAULEM Bay and beyond the Blue Door is the Rec Room.
Betray
Choosing to Betray Luna causes Sigma to be forced to go through the Red Chromatic Door. This is because Alice insists that she not go with K, while Dio wishes for Luna to go with him and Phi. Due to there being a time limit before the doors close, there is no time for objections.
Here, beyond the Red Door is the Pantry.
After Yellow Door
Colors each person has:
 Magenta: Clover, Sigma, Quark
 Cyan: Tenmyouji, Phi, Luna
 Yellow: Dio, Alice, K
Because of this, these are the options for the Chromatic Doors:
Option A 

Option B 

Option C 

After escaping the Infirmary and participating in the first AB Game, Sigma has a choice of 'Ally' or 'Betray'. Choosing 'Ally' will allow Sigma the choice to go through the Blue or Red Doors. Choosing 'Betray' forces Sigma to choose the Green Door.
Ally
If Sigma chooses to Ally against Tenmyouji, he will get a choice between the Blue Door and the Red Door. Attempting to choose the Green Door will have Phi and Alice both tell Sigma no, as Phi doesn't want to pair up with Tenmyouji and Alice doesn't want to pair up with Dio.
Here, the Blue Door leads to the Pressure Exchange Chamber and the Red Door leads to the Laboratory.
Betray
If Sigma chooses to Betray Tenmyouji, this will cause Sigma to be forced to go through the Green Door. This is because Tenmyouji doesn't want to pair with Sigma, and Alice doesn't want to pair with Dio. While Option B is the first option considered under these conditions, but Tenmyouji refuses this as well, as he cannot trust Luna or Phi, and that someone would have to carry Quark. He says that he only trusts Clover, which brings Option C to light. Despite Alice and Dio's objections, there was a vote and Option C was the one chosen, and Sigma goes through the Green Door.
Here, the Green Door leads to the Treatment Center.
After Cyan Door
Colors each person has:
 Magenta: Tenmyouji, Dio, Phi
 Cyan: K, Quark, Clover
 Yellow: Luna, Sigma, Alice
Because of this, these are the options for the Chromatic Doors:
Option A 

Option B 

Option C 

After escaping the Crew Quarters and participating in the first AB Game, Sigma has a choice of 'Ally' or 'Betray'. Choosing 'Ally' forces Sigma to choose the Blue door. Choosing 'Betray' allows Sigma the choice to go through the Green or Red Doors.
Ally
Choosing to Ally with Alice in the AB Game will force Sigma to go through the Blue Door. This is because the players who only have 1 BPSigma, Phi, and Tenmyoujiare asked for which option they wanted. However, Alice doesn't like this idea and instead proposes a vote. She wants Option C. Even though Sigma himself doesn't want that option, both K and Quark agree with Alice, putting Option 3 at three votes. Phi wants Option B, both Sigma and Luna agree with Phi, bring that also to three votes. Dio wants Option A, which Tenmyouji doesn't mind going with, bring it to two votes. Clover is the deciding vote. She agrees with Option C, and Sigma goes through the Blue Door.
Here, the Blue Door leads to the B. Garden.
Betray
Choosing to Betray Alice in the AB Game will allow Sigma the choice to choose between the Green Door and the Red Door. Alice feels she deserves to choose the option, as she only has 1 BP left. She wants the Green Door with K and Quark (Option B). When asked how the others feel about it, they are either indifferent or agree. When the question comes to Sigma, he can say "Yes" or "No". Saying "Yes" would allow him to go through the Red Door with Phi and Luna, and saying "No" allows him to make a choice between the Blue Door or the Green Door. However, attempting to choose the Blue Door will have Alice berate Sigma, as he had betrayed her in the last round. Because of time limits, Sigma was forced to settle for the Green Door.
Here, the Red Door leads to the Control Room, and the Green Door leads to the Archives.
Going Through The White Doors
The other three Chromactic Doors on Floor B are all white. Because they are all the same color, it does not matter which door a team goes through, as there is only one option. After the second AB Game, the colors will get shuffled automatically as usual. However, the colors of the PAIRS are Magenta, Yellow, and Cyan, while the colors of the SOLOS are Red, Green, and Blue. This is to ensure that the color created is White, to match the Chromatic Door.
In order to create white, the groups must be as followed:
 Red + Cyan
 Green + Magenta
 Blue + Yellow
Unlike with the other Chromatic Doors, going through the White Chromatic Doors in the Floor B Warehouse is not a certainty. There are only three ways to go through the escape rooms behind them.
The first is to go through the Magenta Door with Phi and Luna, then choose 'Ally'. Then to go through Green Door with Alice and Luna, then choose 'Ally'. The room behind the chosen White Door down this path is Security.
The second is to go through the Yellow Door with Phi and Tenmyouji, then choose 'Ally'. Then go through the Blue Door with Tenmyouji and Clover, then choose 'Ally'. The chosen White Door down this path is the Director's Office.
The third is go to through the Cyan Door with Phi and Alice, then choose 'Betray'. Then go through the Red Door with Phi and Luna, then choose 'Ally'. The chosen White Door down this path is Q.
Map
On Floor A, there are the Magenta, Yellow, and Cyan Doors.
 Behind the Magenta Door is the Lounge.
 Behind the Yellow Door is the Infirmary.
 Behind the Cyan Door is the Crew Quarters.
All three doors lead to elevator that connects Floor A to Floor B.
On Floor B, immediately outside the elevator are the Red, Blue, and Green Doors.
The below is according to the ingame map and on the paths taken (for example, even if on the map it is not the leftmost room, the leftmost door leads to it).
 Behind the Red Door, from left to right: Pantry, Laboratory, Control Room
 Behind the Blue Door, from left to right: Rec Room, PEC, B. Garden
 Behind the Green Door, from left to right: Archives, Treatment Center, GAULEM Bay
The White Doors, like the Floor A Doors, only lead to one room each.
The below is according to the positions of the white doors on the ingame map.
 The leftmost door leads to the Director's Office.
 The center door leads to Q.
 The rightmost door leads to Security.