Ultimate: I Have a Little Too Many Golden Fingers

System flow, the protagonist has no cp, but there is a heroine, the heroine Natsumi. [Class 1 → Family → Three Kingdoms briefly interspersed with Class 2 → Class 3] Ye Fan traveled to the ultimate world and was bound to the "Ultimate Apprenticeship System", but Ye Fan never expected that being bound to one system would give away three subsystems. So, Ye Fan started the journey of recruiting disciples, signing in, checking in, and becoming stronger... After the war between good and evil in Iron Time and Space, all the power walkers returned. After their return, the power walkers cultivated themselves for several years. Then, because they were dissatisfied with the strict control of the Muggles, they finally chose to go to war with the Muggles. This battle lasted for many years, and in the end due to the disparity in numbers, the Power Walkers ended in a disastrous defeat. As a result, the demonic world took advantage of the situation and invaded Iron Time and Space. Without the protection of the white power walkers, Iron Time and Space quickly fell. After the war with Muggles, the few remaining power walkers chose to take refuge in Golden Time and Space. Natsumi encountered a time earthquake on her way to the golden space-time. The time earthquake caused her to fall into a crack in time and space. She also knew the entire plot of the Ultimate series. After an unknown period of time, after watching the ending of "Ultimate X Dormitory" again, Natsumi's desire to go back and change the ending reached its peak. So, by chance, she was bound to the ultimate plot system and was brought back ten years before the plot started...