In an alternate 21st century, rich mafia members can turn into "Demon Kings" through increasingly popular ether-enhancement surgery, and the bounty hunters called "Braves" are the ones called upon to take them down. Yashiro only wants the simple pleasures in life - pizza, beer, and card games. When three young Braves offer him a majestic sum to be their private tutor, he agrees solely for the money - but is it worth what he's getting himself into? (Source: Manga Planet)

In an alternate 21st century, rich mafia members can turn into "Demon Kings" through increasingly popular ether-enhancement surgery, and the bounty hunters called "Braves" are the ones called upon to take them down. Yashiro only wants the simple pleasures in life - pizza, beer, and card games. When three young Braves offer him a majestic sum to be their private tutor, he agrees solely for the money - but is it worth what he's getting himself into? (Source: Manga Planet) 
Notes: 
-Nominated for the Tsugimanga 2020 Award in the Web Manga Category. 
-The manga got licensed by LEED on March 13, 2025 and started being published on the manga service Comic Border on the same day.

Note: According to the author, the light novel got canceled due to some issues with the editorial.

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