Dude goes into another world and gets a couple girls in the process. Typical isekai genre. The only thing that's different is setting in a sci-fi time. It's not bad if you like sci-fi but I ain't seeing no mechas or nothing but spaceships. I'm fine with that tho.
Mezametara saikyou soubi to uchuusen-mochi datta no de, ikkodate mezashite youhei toshite jiyuu ni ikitai