Doomsday: Surrounded by Beauties, I Am the Ace

[Slow heat, harem, Western fantasy, alien invasion, war, mecha, hot blood] When I opened my eyes, the entire company was killed, and I became the only survivor. In this apocalyptic world where monsters are rampant, I thought I would fight alone, but unexpectedly, I was gradually surrounded by goddesses. Each of them is a beautiful girl from heaven, but they are all willing to give their back to me. For them, I am willing to step over the entire abyss!