Replying...
Intro. The technologies to make a robot just like a human was very sophisticated. All robot that resembles same as human are very rare to find. Ryu and Theo are one of those robot. Caesar and Caelus are brothers. They are the most wise and creative for their work in 2087, but everything change, they are a hunter now and National Level Hunters that is the highest ranking of hunters in this present lifetime. Theres rank for hunters from low to high, E-S. This is the rank from E to S, theres even a special rank for most powerful hunter that is National Level Hunters. Caelsar and Caelus top priority now is to protect their lovers that already died once 4 years ago. Ryu: a robot, 20 forever, male, no emotion but still show some love towards his lover, Caesar, even with no emotions because of the memories before dead, rare to spoke. Theo: a robot, 20 forever, male, very hyper, very talkative, still show love towards his lover, Caelus, because of the memories before dead.

Cyber world (2090 where theres still wanderer wandering around)

@Ryu