Chapter 1, Ajin Wiki

Detection and Subsequent Action is the first chapter of the manga Ajin: Demi-Human, written by Tsuina Miura and Illustrated by Gamon Sakurai. We are first introduced to Kei Nagai, a teenage boy who is talking to his friends about studying throughout summer break for medical school. Soon after he spots Kaito, referring to him as Kai in his head, hinting that they have/had some sort of relationship, but brushes him off as a "freak" as soon as his friends question whether or not Kei knows him or no

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