Steel, Guns, and the Industrial Party in Another World - Chapter 294:

Xia Ming, a university student who just graduated, accidentally got hold of a system. Xia Ming became powerful! Medical skills? OK, I don’t have the skills. But on the following day, even the highly skilled doctors couldn’t be compared to him.

Force? OK, I’m not your match today but on the following day, even the Great Master would have to concede defeat.

Basketball? OK, I’m a fusion of the world, the strongest basketball star, would I be afraid of you?

Wife, that is even better. I have a beautiful President Lin, and a Missy who is like a rose. Each of them is beautiful, how are you going to compare to me? … … You guys spent a hard time learning skills, acting but I am different.

I have an Almighty System, what skills do I not have? As long as I’m willing, even the celestial beings cannot stop me. With Xia Ming’s words: “As long as the system is in my hands, the whole world is under my control.” I am Xia Ming, I speak for myself.

- Description from Novelupdates

After dying, you wake up and realize you've been reincarnated as a background character who is judged as human trash.The decision to change your destiny comes instantly.Discovering that your identity isn't as simple as you thought, you feel favored by the heavens when you manage to become a powerful character.Katase: You won't fool me. I'll expose you for the pervert you are.Murayama: ...Thank you for saving us.Issei: Motohama, what happened to you? How are you so powerful?Rias: If you join my peerage, I wouldn't mind being yours.Sona: You beat me in the game. That means you're now my fiancé.Yasaka: Honey, Kuno wants a little brother.Kaori Houjou: Shinji-kun, let's go on an adventure.Kaede Kazama: Shinji-kun, thank you for saving me from that ball.Rie Sawada: Shinji-kun, I'll wait for you. You'll be my future husband, fufufufu...Changing known history and taking it in a direction not even his eyes could perceive, he didn't stop no matter what. Not even the other world was safe from his clutches.Lexia Von Arselia: My hero, and my future husband...Shinji advances without stopping.“I, Shinji Motohama, swear here and now that I will reach the top of both worlds.”

The world is about to be destroyed to make way for an interstellar transmission array formation. A young man journeys through the stars to save his home. A bloody fantasy adventure.