Eternally Regressing Knight - Chapter 3 - A Day

Jeff Anzon, a young man who had just turned 18, was instructed by his father to inherit their family's fortune. He was stunned by this news since what was he going to inherit - their old wooden house? He didn't argue and decided to go back home since he missed them.But a huge problem occurred when he went to the airport and boarded the plane. During the flight, a weird phenomenon happened. Even though it was a bright and sunny day, suddenly it turned stormy, dark, and rainy. As the plane crashed to an uncharted island, Jeff found himself stuck on this island.So, what should he do? Of course, move on and build shelter. Luckily a suitcase floated before him, and he saw an axe inside. As he chopped a tree, he was stunned by the sudden occurrence.

'Death' It was meant to be the end, but it brought a new start.After a destructive nether storm consumes his world, Jack finds himself face-to-face with a powerful being who tasks him with a mission he can’t refuse.Reincarnated as Asriel—the most tragic, doomed character from a novel he once read—Jack’s frustration grows: “Damn it, why this fool?”Now, he must navigate Asriel's cursed life, facing relentless supernatural beings that threats him with a single hope:[Necromancy System Activated!][Ascend as the Ruler of the Undead!]But can Jack rise above Asriel's fate, or will he, too, fall prey to the shadows lurking in his new world?

He Lang died by his own hands for the sake of his imperial younger brother’s ambition, whom he loved. He was offered to be reborn in exchange for giving up his past romantic feelings. Reborn without the burden of his romantic feelings, he brings with him a manual to new worlds. He wholeheartedly followed the instructions of the manual to complete the tasks, not knowing that the originally slag gong was blackening…
He pleaded to his affectionate Emperor brother to release him, he pleaded to the paranoid prisoner next door, but until the end he remained baffled.
In the end, he discovered that the full name of the manual was – “Slag Shou Cultivating Manual”
Σ (っ ° ° °;) っ!

- Description from Novelupdates

Lin Jie, a transmigrator, is the owner of a bookstore in another world.