Apocalypse Machine Victim

A desolate surface world. ASID—mechanical lifeforms that came flying from the writhing cosmos. A world where only three men and one hundred thousand women, afflicted by a strange disease, have escaped to the sky. When the boy Kashiwagi Makoto awoke, he found himself inside an ancient weapon in the underground of such a world. He resolves to annihilate the ASID that roam the surface. For only one reason—to fulfill his wish to return home. This work is also posted on Kakuyomu under the same title (https://kakuyomu.jp/works/1177354054882840681) New work started. Someday Oruga Will Slay the Dragon ~I Thought I Was Chosen by the Holy Sword, but It Was Just a Crappy Blade and I'm on the Verge of Expulsion, but Through the Kind Instruction of a Beautiful Ghost Girl, I Aim to Become the Strongest Through Swordsmanship Alone https://ncode.syosetu.com/n6657gn/