10 nen goshi no HikiNiito o Yamete Gaishutsushitara Jitaku goto Isekai ni Ten'ishiteta - Chapter 9, Part 13: Yuuji, cleaning up afterwards with the adventurers

The world that nurtured the civilization which reached the pinnacle of magic was on the verge of destruction.
The last survivor transmigrated to the past, when the magic civilization started growing, as countless mages were still fumbling their ways through the thorny paths of magic knowledge.
He, who came from the end of the magic era, aim to reach the pinnacle of magic.

- Description from Novelupdates

Choi Sunwoo’s life takes a dramatic turn when he wakes up as a character in the very novel that enthralled him for weeks. Working as a publishing company PD for five years, Sunwoo is no stranger to dramatic twists, but nothing prepares him for this surreal twist of fate. Now pregnant and trapped in a cursed narrative, he becomes an integral part of the story he once read. Sunwoo’s character, an ambitious Omega, daringly infiltrates the secretariat under the guise of a Beta, all to be near the enigmatic and dominant Alpha, Kang Jinwook. His bold plan spirals out of control, leading to a scandalous pregnancy and a botched blackmail scheme. As he attempts to extricate himself from this tangled web by resigning, he finds himself the focus of Jinwook’s intense and obsessive desires. Will he outwit Jinwook and break free from the novel’s grip, or will he be forever ensnared in its pages?

In her previous lifetime, they had married for five years. He meant everything to her, but she was thrown away like an old shoe.

In a distant future, Alexander wakes to a reality where his past is a fog and his consciousness inhabits a robot body. Faced with a fragmented memory and an uncertain future, he embarks on a quest for answers. Amidst the hum of his repair shop, where he scrapes by, he delves into the mystery of his transformation. As Alexander forges ahead, stitching together the threads of his identity, unexpected companions join his journey. Among them is a precocious girl whose presence sparks forgotten emotions, offering a glimpse of his lost humanity. Yet, in the shadows, lurk those drawn by his technological prowess, casting ominous shadows over his path. Caught between the pursuit of understanding and the threat of those who covet his abilities, Alexander confronts a pivotal question: will he succumb to adversity or emerge from the crucible stronger than before?