633, accomplished an unprecedented feat.

All the instruments in the operating room were working, but Gu Tao was already slumped on the couch beside him, sleeping like a dead dog, his face greasy and haggard. After a brief physiological activation, he finally faced a major mental collapse, and the last three hours of the surgery were completed by Charlix in place of Gu Tao.

Meanwhile, Tifa showed no noticeable change from start to finish, not even a hint of tiredness.

"Tifa, are you even human? I barely made it for a few hours, and you've been at it for almost sixty hours with no reaction?"

Charlix looked at Tifa, who was using bio-protein to suture a skull, with amazement akin to looking at a monster, while Tifa just continued her work with a smile on her face, not giving a response, her hands still operating with precise and rapid movements.