After being reincarnated, Ars Louvent is supposed to live in a different world as a weak aristocrat. Both his physical strength and intelligence were mediocre in both worlds, but here he naturally possessed a skill called "Appraisal" that allowed him to see the potential of any person. By gathering talented people by his side, Ars uses this "Appraisal" skill to transform his weak territory into the strongest one! But the road ahead of him won't be so simple.

The hero's son and the ghost of the Demon King are the master and pupil!? Eirth, the son of the hero who defeated the Great Demon King, is troubled. Always expected to achieve great things, but unable to meet those expectations. No matter the effort he puts in, and the results he obtains, it's never enough for them. "I'm a disappointment compared to my father" or "Don't you know you're the son of the hero!!" Living every day like this, Eirth meets his destiny in the room containing the sword of his father, the hero. "Interesting. I will train you. I have only free time now.” Eirth receives special personal training from the Demon King just to get back at his parents and the world. In the coming days, his parents, the heroes of the past, his first love, the princess childhood friend, the geniuses of the era, and the world will tremble before him.

After his class gets buried alive on their way back from a school trip, 18 year old Makoto Takatsuki and class get transported to another world. Unlike the rest of his classmates who gained powerful abilities, Makoto barely gains any power. "This other world is unbalanced!". With the threat of a great Demon Lord rising again and a goddess with zero followers, can Makoto make his way through this new world and clear the isekai!?