The story opens with a standard high school class suddenly being transported to another world. While most students are granted hero-like roles or high-tier skills to save the world, the protagonist, , is singled out. Instead of becoming a hero, he is reincarnated as the Demon King , the very entity his classmates are tasked with defeating. This immediately sets up a high-stakes conflict where he must survive while being hunted by his former friends. Initial Impressions & Review

The artwork in Chapter 1 is dynamic. The contrast between the mundane classroom and the visceral bloodshed of the invasion is striking. The character design of the possessed protagonist manages to look menacing despite wearing a standard school uniform, largely due to changes in facial expressions and shadowing.

The chapter ends with a double-page spread: Kaito standing on the broken altar, a demonic crown materializing on his head, looking down at the kingdom’s capital city. His final line:

: Before the attack hits, a blinding light envelops the entire classroom. The students are transported to another world where they are all reincarnated as Demon Kings (Dungeon Masters).