Zako Ha Ura Boss Wo Yume Ni Miru Saijaku Wo Shukumei Zukerareta Dan John Tansaku Sha, Ni Ju Go Nen No Toki Wo Hete Kakusei Su (BK Books) [Light Novel]

[Machine Translation] A fantasy of rising through unfortunate fate with miraculous evolution! One day, Rust, a six-year-old boy, was attacked by a monster when he was rescued by Riffil, a top-ranked explorer. This encounter made Rust yearn to become an explorer, and he was given a role by God in the dungeon city where Riffil was living. However, he was given the role of a "small fry" with the lowest ability value and no skills to manifest. Still, in order to fulfill the promise he made to Riffil, he believed in the evolution that would occur when he mastered his role, and he continued to hunt goblins by himself. And the moment his twenty-five years of hard work bore fruit, an unprecedented evolution began!

不遇な運命を奇跡の進化で吹き飛ばす成り上がりファンタジー!六歳の少年だったラストは、ある日モンスターに襲われていたところを最高ランク探索者のリフィルに助けられる。この出会いでラストは探索者に憧れ、リフィルがいるダンジョン都市で、神から役割を授かることに。ところが、彼に授けられたのは、最低の能力値に、発現するスキルもない「雑魚」という役割であった。それでも昔リフィルと交わした約束を果たすべく、役割を極めた時に起こる進化を信じ、たった一人でゴブリンを狩り続けた。そして二十五年に渡る努力が実を結んだ瞬間、前代未聞の進化が始まる―!!