Responding to Rimuru's concerns about monsters in the forest harming humans, Vesta and Kaijin reveal a new invention they hope will keep the road to Tempest safe. Also, Rimuru assigns a new task to Geld.
A crystal made of magicules pulled 
from the atmosphere.
بلّورة مصنوعة من جزيئات سحريّة
مسحوبة من الجوّ
Questo è un cristallo composto
dalla sostanza magica nell'aria.
Um cristal feito de magículas
retiradas da atmosfera.
Кристаллизованными маглементами!