Reika Ryuzaki, daughter of the late diamond collector Yoshio Ryuzaki, is a jewel specialist who fights with knuckles branded as "Krishna" in cases involving bad guys who rob or misuse jewels for their own gains. She has an advantage in fighting as she can summon spirits from certain jewels to aid Reika in making her a better combatant in the field.

Ordinary high school student Satoru Ikaruga, while he doesn't look like it, happens to be a genius vehicle user, kinda like a MacGyver of vehicles. And he's extremely good with all vehicles like jet skis, trucks, fighter planes and helicopters. If you can name the vehicle, he knows how to work it. Ikaruga works as a vehicle expert for a multinational specialist organization called the Almighty Support Enterprises (ASE) while trying to maintain his high school life as much as possible.

Series of stories about Parasyte, from various notable mangaka.