Ryūsei Narukami is your typical NEET. He spends his days shut in his room playing video games without a care in the world, living a lazy life. But the truth is, Ryūsei used to be a powerful demon king in another world! So why not spend this new life doing whatever he wants? Except, he wasn't the only one reincarnated into this world. The hero who struck him down is here too—and she's a really cute high school girl?! Can Ryūsei survive reuniting with his foe in a new world, or will he find himself fighting even in this life?

Sasaki is an overworked salaryman drifting through the corporate grind, sustained by cigarettes and the cheerful service and smile of Yamada, the clerk at his favorite supermarket. But one night after a grueling shift, he arrives late to find Yamada nowhere to be seen. With nowhere left to smoke, his spirits sink—until a pierced young woman calls out to him: “You can smoke here.”

In a world where likes are currency and every viewer is a judge, OMGkawaiiAngel—also known as KAngel—is determined to become the ultimate "Internet Angel." Yet beneath her pastel smile and lively streams, there's more than meets the eye.