Synopsis

The protagonist revisits a dungeon he previously cleared, searching for treasure and magical remnants, expecting it to be empty. However, he discovers a fully grown Zadrun, a type of monstrous plant that consumes everything, has taken root, indicating that he missed a seed during his previous clearance. He also remembers that the dungeon was used for monster experimentation by Underworlders and contains hidden chambers with special security measures. Realizing his oversight, he now has to deal with the oversized Zadrun.