Dare Ichi Nin Kaeranai "Naraku" Ni Otosareta Ossan, Ukkari Ango Wo Kaidoku Shitara, Michi No Ibutsu (OOPArt) No Tsukaite Ni Narimashita! Vol. 2 [Light Novel]

[Machine Translation] Kengo is a businessman who gets caught up in a heroic summoning and is banished to the "abyss" where he cannot return alive. He escapes there with the power of super-technology and begins a journey to unexplored lands. One day, after saving an elf girl from bandits, Kengo and his friends are told that her family is in trouble, and they head for their home forest. There, Kengo witnesses the ailing elves and the weakened World Tree, and struggles to heal them and find the recipe for a secret medicine! He and his new spirit companion, Fie, work together to confront an unprecedented crisis!

勇者召喚に巻き込まれた挙句、生還不能の『奈落』に追放されたサラリーマンの健吾。彼は、そこで超技術の力を手に入れて脱出すると、秘境巡りの旅を始める。ある日、盗賊からエルフの少女を助けたケンゴとその仲間は、彼女の一族のピンチを伝えられて、故郷の森へ向かうことに。そこで病に苦しむエルフ達と衰弱した世界樹の姿を目撃すると、ケンゴは彼らの治療や秘薬の製法探しに大奮闘!仲間になった精霊のフィーと協力して、未曽有の危機に立ち向かう―!!