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Zero Out All Despair!
Hello, This is the Chaos Zero Nightmare Team

In Chaos Zero Nightmare, probabilities are displayed with rounded decimal values.    
As a result, the sum of all displayed drop rates may exceed or fall short of 100%.    
* This information was current as of August 12, 2026.

■ Rescue Guide
ㆍ The “Amplified Distress Signal: Chizuru” event is a Normal Combatant Rate-Up Event.
ㆍ All events falling under the ‘Normal Combatant Rate-Up Event' category share and accumulate the same ★5 pity counter.
ㆍ For every 10 Rescues, you will obtain at least one Target of ★4 or higher. The ★4 Target acquisition rate is (100% - ★5 Target acquisition rate).
ㆍ The individual acquisition probability for each Combatant/Partner is applied as a 1/n chance within the combined probability of its respective grade and any rate-up effects.
ㆍ When the Normal Combatant Rate-Up Event ends, the rate-up target may return for future rate-up events. 

■ Probability Guide
[★5 Targets]
ㆍ The base probability of a ★5 Target appearing is 1%, and the total probability (including pity) of a ★5 Target appearing is 2.14343%.
ㆍ Base probabilities are applied to the 1st – 57th Rescue, and acquisition chances of a ★5 Target from the 58th Rescue increases by 4.5% each time until the 69th Rescue. A ★5 Target is guaranteed on the 70th Rescue, with a 50% chance to obtain a ★5 Rate Up Target out of the ★5 Targets.
ㆍ If a Rate Up Target does not appear on the 70th Rescue, the base probabilities are applied again from the 71st - 127th Rescue, and acquisition chances of a ★5 Target increases by 4.5% each time until the 139th Rescue. A ★5 Rate Up Target is guaranteed on the 140th Rescue.
ㆍ Obtaining a ★5 Rate Up Target resets the total Rescue count.
ㆍ The  total probability (including pity) of a ★5 Rate Up Target appearing is 1.42895%.
ㆍ The individual probabilities are as follows:

[★4 Targets]                                  
ㆍ The base probability of a ★4 Target appearing is 6%, and the total probability (including pity) of a ★4 Target appearing is 12.98314%.                                    
ㆍ The base probability for ★4 Targets remains the same regardless of Rescue count.                                    
ㆍ At least one ★4 or higher Agent will appear every 10 Rescues, with a 50% chance to obtain a ★4 Rate Up Target out of the ★4 Targets.                                    
ㆍ If a Rate Up target did not appear, the next ★4 target that appears is guaranteed to be one of the Rate Up targets.                               ㆍ The total probability (including pity) of a ★4 Rate Up target appearing is 8.65542%.                                    
ㆍ The individual probabilities are as follows:          

[★3 Targets]
ㆍ The base probability of a ★3 Target appearing is 93%, and the total probability (including pity) of a ★3 Target appearing is 84.87345%.
ㆍ Base probabilities are applied to the 1st – 57th Rescue, and from the 58th through the 69th Rescue, the chance to obtain a ★3 Target decreases by 4.5% each.
ㆍ If a Rate Up Target does not appear on the 70th Rescue, the individual chance is applied again from the 71st to the 127th Rescue. From the 128th Rescue, the acquisition chance for a ★3 Target decreases by 4.5% per Rescue until the 139th Rescue.
ㆍ The individual probabilities are as follows:

■ Special Guide
[★5 Targets]
ㆍ When acquiring a duplicate ★5 Combatant for the 2nd through 7th times, they will be converted to that Combatant's [ Memory Code X 1 ] + [ Moment of the Radiant Hero X 20 ]. From the 8th time onward, they will be converted into [ Spectral Cube X 1 ] + [ Moment of the Radiant Hero X 50 ].

[★4 Targets]
ㆍ When acquiring a duplicate ★4 Combatant for the 2nd through 7th times, they will be converted to that Combatant's [ Memory Code X 1 ] + [ Moment of the Radiant Hero X 4 ]. From the 8th time onward, they will be converted into [ Moment of the Radiant Hero X 10 ].
ㆍ When acquiring a duplicate ★4 Partner, you will obtain the Partner and [Moment of the Radiant Hero ×4].

[★3 Targets]
ㆍ When acquiring a duplicate ★3 Partner, you will obtain the Partner and [Moment of the Radiant Traveler ×20].

Thank you.