The next day, they went out and purchased a large quantity of smoke grenades.
Generally speaking, smoke grenades are only effective in obscuring vision, but the kind they bought would release a large amount of irritant smoke, so users also had to be equipped with gas masks.
Yuri drew a rough map of the mine based on the clues Natasha had obtained from a friend, and they also devised some offensive strategies.
Since the mine was deep and the space relatively enclosed, it was perfect for using smoke grenades as an attack weapon. With just a bit of extra thought on the location and technique of deployment, they could wipe out the monsters in the mine without much effort.
However, the dosage of smoke grenades needed to be tested.
They closed the doors and windows, fully sealed the front door, and only opened a window at the end of the corridor on the second floor. Pretending the villa was a cavern in Death Mine, they then donned their gas masks and deployed a smoke grenade—
