From GRAY RAVENS
Koya's Backstory I
An early military Construct, Support type. Carries mobile terraforming equipment, and is responsible for battlefield surveying and basic construction work. Not built for combat, Koya is more suited to providing support to his comrades before and after a battle. He is also a close friend of Kamui. During his time with Kamui Koya has noticed some secrets of Kamui, but has decided to stay silent on the matter, and he himself does not mind them at all. In his last mission, Koya received special orders from Nikola. The mission failed and Koya lost his life.
Koya's Backstory II
Using the simulated data in Babylonia's database, a Koya memory chip was created. The memory chip Koya is, however, extremely unstable. Only a few select members can receive his help.