E.g. When performing Rebirth, required FINA would increase accordingly from Fragment 1 to 6th time, after 6th time, required FINA will not increase which remains the same amount as 6th time. If not perform Resonance after 7 days, the Resonance layer will decay from 6 fragments to 5 fragments, required FINA would also decrease, and so on. On the other hand, If perform Rebirth within 7 days, Resonance layer would remain on layer 6 and the decay period would be reset back to 7 days.