Nozomanu Fushi no Boukensha - Vol. 4 Ch. 18 - A One-Bronze-Coin Quest

[MangaDex]

 

[The5thSeraph]

How convenient. Lento is immune to poison, so I'd imagine going into a poison area full of poison monsters should be easy for him.
And unlike Blight Town, this chosen undead won't have to worry about falling to his death.