No one can be perfect. Not even the so-called geniuses of the world. But for the people who aren't even regarded as geniuses...they're considered even more imperfect. Seth was one of these so-called imperfect normal people. No matter what he did, he could never attain a good-enough mastery in it--no matter how much knowledge he crammed into his head, it always led to the same result:
In the end, it was mainly books of fantasy and anime that he took solace in. He pretty much became a NEET. And he died like a NEET as well:
Alone and in clothes he hadn't changed out of in a week.
But what if this so-called normal person Seth woke up in a parallel universe where some of those anime he'd watched were real and the characters were as 3D as he was? What if he'd been transmigrated into his body when it was 16 and given a single gift? Well, it's safe to say Seth wouldn't be a so-called normal person anymore.