Far East Monolith

A mysterious giant called the Monolith floats in the sky. The mist it emits has wiped out all of Toukyou's population except for a few people. One man can survive in the mist. Armed with a big gun and a sword, he is searching for human survivors. A tale of the duel with “New Humanity” unfolding in Kabukichou, Toukyou!!

Award: Won a Selection and the TOP Prize in Young Magazine's 489th Monthly Newcomer Manga Awards. (January 2021) (Source)