DxD: I Steal Luck - Chapter 48: The Value of One Sword To Rule All.

When the heavy curtains of night descended, darkness fell upon the earth. What will later be known as the dawn of the “Dark” era, humanity once again unfolded a new path of evolution. While retaining the memories of surviving ten years in the apocalyptic world, Ye Chen awakens back on the very day the disaster struck; all he can do is protect the people dear to him, and then….

With the might of an ant, set foot upon the pinnacle of this world!

The people lost in the thralls of everyday life, aimlessly struggling for survival in this world, move forward; there will surely be a path only you can open….

- Description from Novelupdates

A 34-year-old NEET otaku, chased out from his house by his family, found that his life is reaching a dead end. He then recalled that his life could actually have been much better if he had made better choices in the past.

Just when he was at the point of regret, he saw a truck moving at fast speed, and three high schoolers in its path. Mustering all the strength he had, he tried to save them and ended getting run over by the truck, quickly ending his life.

The next time he opened his eyes, he is reincarnated to a world of sword and magic as Rudeus Greyrat. Born to a new world, a new life, Rudeus decided that, “This time, I’ll really live my life to the fullest with no regret!” Thus starts the journey of a man yearning to restart his life.

In the eyes of Chi Zuxu, Chi Yi is a typical delinquent with the three big ‘NOs’— no morals, no virtues, no principles. To her, though, he is a classic baddie who is heartless, soulless, and inhuman.

After the girl breaks and climbs through his glass window on the second story, she peeps at him with an innocent demeanor.

“Chi Zuxu, lend me the other half of your bed!” she wolf-whistles at him blatantly. The man admonishes with a scowl, “Chi Yi, aren’t you shameless!”

Inside the cinema, as Chi Yi’s little hands restlessly grope the man’s body without chagrin, she tells him smilingly, “Chi Zuxu, I want to do bad things with you!” Holding a look of woeful disgrace, he knocks her head. “Chi Yi, aren’t you embarrassed!”

It is a lovely love story between a barefaced and a reticent. But, Mr Reticient, please don’t cry when Miss Barefaced finally slips away.

Transmigrating into a poor and mistreated young lady's body, what will the craziest alchemist of the seven realms now do?