Hechii

A catastrophic event has thrust the world into an age where disease begets disease. Ostracized for his unconventional treatment methods, the dark Doctor Ikuru is stricken with an immortalizing disease. On a desperate mission to die, he must save a world desperate to live. This medical science-fiction adventure will go to the very edge of humanity and back in one man's search for an ending to his suffering, all while saving the world he wishes to leave. (Source: MANGA Plus) Note: The manga got originally published as a short series of 4 chapters on February, 2020 in Shounen Jump +. On September 6, 2022, the manga got serialized and its 4 original chapters got republished as part of the serialization.

When he was younger, Takada Nozomu aspired to be a mangaka… now, 10 years later, at age 29, he works at a convenience store and has completely given up his dream until his younger, talented coworker Mimura, who shares his dream, convinces him to give it a chance and sign up for a website for amateurs to publish their manga online. Once they sign up, they are suddenly summoned to a mysterious space called the "Manga Colosseum" and forced to participate in a so-called "death game," competing by drawing manga with their lives on the line. As he faces the challenge, Takada begins to rediscover his passion for manga… but can someone who's given up once be able to survive in this game…?