Armored Core: Return from Hell

Rubicon 3, a planet that was burned to death once. Korol reappeared, and all forces swarmed in. Everyone was robbing and killing everyone. Crow, 43 years old, is a 4th-generation enhanced human and an independent mercenary. He drives an assembled mecha and works for whomever pays. Intensive surgery in exchange for extraordinary control power, but the price is that the memory is chipped away layer by layer. There was a photo on the dashboard, a white mecha, not his. Who gave it? Can't remember clearly. He only knew that he once belonged to a mercenary team. The whole team was destroyed, and only he survived. How was it destroyed? Who is responsible? There are only fragments left in my mind: a large white area with nothing in it, and I wake up with my heart beating very fast. He's back from hell. Hell is not ready to let him go yet. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.