This is an age of demonic invasion.
Jiang Ming awakened the weakest, F-rank Spirit, and was humiliated when the school bully threw money at him. But by chance, he awakened the Pain Value System.
"Let the storm rage; I'll set the world to rights, carefree as I stride through the dust!"
From then on, Jiang Ming would shout at the monsters: "If you're my bro, come and hit me!"
He was just as ruthless with himself, hacking away at himself several times every day...
Later, he discovered that making other people suffer could earn him Pain Value too. From then on, Jiang Ming stopped doing things the usual way...
The chuunibyou Jiang Ming teamed up with a crybaby girl, a brash and hilarious girl, a school bully who was "as approachable as a billion," and a boy who was an "artist of language."
Together, the five of them made their way through this disaster-stricken supernatural age, filling their journey with laughter and warmth...
(The blurb doesn't do it justice. Please read the story itself.)