There's Something Wrong With This Account - Chapter 439 - : 439, Return of the Young Elder.

Reborn into an ancient world of hardship, Chen Qing became a scholar who toiled through ten years of cold study, finally achieving fame on the golden list. Just when he thought he'd join the ranks of the literati, marry a beauty, and reach the pinnacle of life, he suddenly found himself entangled in a bizarre and fantastical incident.It was also at that time that he discovered this world was far from simple—there were man-eating demons, heart-bewitching devils, and even the legendary immortals who could live forever but were exceptionally strange!What he found even more inconceivable was... these deadly things seemed... to all have been designed by himself!!!

Upon arriving in another world, I found myself become a weed that people casually stepped on.

A side story series featuring the girls of Kyoukai Senjou no Horizon.

“On that day, Zach Harper died-” Or at least that was how it was supposed to be. I died. But there was good news, and bad news. The good news; I was reincarnated! Transmigrated into the World of Aethoria! Holy fuck, miracles do happen! But the bad news was, “Huh? What’s this?” ... [DING!] A New Quest has been issued:- Type:- SURVIVAL Name:- Quest To Becoming Stronger: Description: The {Great Calamity} is coming...Get stronger and survive. Duration-: ... Reward:- ... Penalty:- Death, ??? ] ... I had to survive.