Humongous dark smokes clouds floated below the starry-night.
"Huff-huff!"
Derein's vision was dyed blood red, but his eyes refused to look away from the battlefield. His body showed sign of collapse, seemingly at the end of his life.
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Additional tags: Character growth, organization building, age-regression, mechs, racial discrimination, hard-working mc, special ability, slight narcissistic mc, cold mc, ruthless mc, no harem.
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Author note: The front image does not belong to me, if you want me to take it down, just comment.