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.
automatically maintains 
any spell entered into it.
تلقائيّاً على أي تعويذة تُدخَل إليه
Ein bahnbrechendes
magisches Instrument.
le sort qu’on y a enregistré.
la magia precedentemente
registrata al suo interno.
qualquer feitiço inserido nele.
которые оно затем будет питать маной!