Killer J's previous words made Shengnai almost believe that he actually stopped time, but when Shengnai re-examined himself and his soul, he immediately noticed the discrepancy.
Time wasn't actually stopped, it was their perception during that period of time that was interfered with, it didn't take very long for Shengnai's soul to dispel the Animosity's isolation and perceive time again.
This only happened because they were caught off-guard by the attack, and it wouldn't be very hard to avoid this interference the next time.
Killer J continued to sprint away while holding onto the loli Lisa. Periodically, he would release his refined Animosity to interfere with the perception of those in his surroundings and buy himself a bit of time, once again escaping the encirclement.
