This Must Be Another World Because I Was Chosen To Rewrite The Fate Of Subterranean Civilization Quest

After a tragic death in modern Japan, Kei Nakamura awakens in a breathtaking subterranean realm, where he discovers he has been chosen to wield powerful Alchemy Circles. Teaming up with the enigmatic Emi Akatsuki, Kei must unravel a dark plot orchestrated by the sinister Ayame Saionji, who threatens to reshape the very fabric of their civilization. As allies are gathered and secrets unearthed, Kei faces an impossible choice: confront the true nature of his destiny or witness the collapse of an entire world.