Pia Rockwell is a minor villainess in the game Caroline and the Rainbow Magic Sweets. At the end of the game, she's destined to be judged at her graduation party, see her engagement broken off, and be banished from the kingdom. Realizing she's doomed, Pia offers to end her engagement with Rufus Stan…but this only inspires the proud chancellor’s son to make a bet with her about their future!

When office worker Akira Yagami gives his life saving a child, he awakens in another world as a weak goblin. But luckily, he’s granted a unique skill that extends his lifespan decades beyond their species limit and allows him to inherit the abilities of fallen goblins. In a realm of powerful races like demons and elves, Akira’s rise to becoming the strongest goblin begins.