Hero Hustle: Data Soldier
A story about a soldier who was summoned along with four teenagers as Heroes. In this dark world which had gained some of Earth’s technology, a Halfling Elf named Nell reincarnates the former Heroes as monsters.
Simon, being the unluckiest out of the five is reincarnated as a Slime and is given no advantages beside a Magic Crest that was created using resources only an SSS Rank individual could obtain. After Simon learns of his Crest’s ability to revive him before death, he does all he can to survive in his current form.