Entering the Fate Space without any emotions is a personal principle of Han Dong.
Intertwining personal emotions with the system-generated individuals within the Fate Space, which have no relation to oneself, often complicates matters.
Rescuing people...impossible.
Han Dong decisively ends the young man's nightmare and focuses his attention on the 'Swollen Woman'.
"This woman seems to have completely lost the desire to survive, consumed by despair.
At the very last moment of ending her life, she was devoured by the hidden madness in the mist and transformed into an 'Unnamed Believer'.
After being thrown out of the supermarket, she reappears in the bathroom.
Since she didn't enter from the front, there's only one way she could have invaded the supermarket... through the sewer."
The seawater and dying fishes in the women's restroom were squeezed out of the sewer along with this woman.