Runaway is the 16th chapter of Ajin: Demi-Human, created by Gamon Sakurai.
Tosaki is looking through the camera footage of the front of the building with Sokabe when he notices that they are people staggering about and realises that there were IBMs there. He spots Nakano following an IBM with his eyes and comes to the conclusion that he is an Ajin.
Once Nakano arrives home his neighbour spots him and begins worrying about him due the blood on his clothes. After he arrives at the front door he is greeted by a group of armed men and is immediately chased. After falling off the balcony he is hit by Tosaki's car and before he is captured and ambulance that was called by his neighbour comes to take him to hospital.
Nakano dies while in the emergency room and escapes. When reviving he noticed the IBM particles coming out of his body and remembers seeing the same particles in the mountains. He proceeds to travel to the area where he saw the particles and met Kei and his IBM. Kei's IBM almost immediately kills Nakano after seeing him and Nakano revives him revealing to Kei that Nakano is also an Ajin. Nakano tells Kei that he wants to stop Sato.