So What's Wrong With Getting Reborn As A Goblin? Volume 1

Office worker Akira Yagami’s altruistic nature usually gets him the short end of the
stick. When he dies after saving a kid from oncoming traffic...he reincarnates in
another world as a goblin?! Normally, goblins only live for seven days, but Akira’s
newfound powers let him defy the species’ normal life span...and are the key to his
path to becoming the strongest goblin ever!