Familiar—why would he have that sense of familiarity?
When Chen Mu saw Butchie's vacant eyes, he finally understood where that familiarity was coming from.
Breath control! Chen Mu remembered having learned breath control from the mysterious card. Wasn't such a feeling rather similar to when he would use breath control himself? Could the two be somehow related? Or was it nothing more than a coincidental similarity?
Breath control was one of the two main feats of the Night of the Cross. That ancient school was endlessly mysterious in Chen Mu's eyes. The power of breath control had helped him get through a series of difficulties. At the same time, however, its powerful side effects had forced him not to make use of it for the time being.
It would be great if he could use breath control without the side effects. That absurd notion popped in Chen Mu's mind countless times.