Card Room - Chapter 582 - Plan B

One day, a mysterious tower suddenly appeared in the city. The people decided to call it a dungeon, and while it was full of rugged terrain and dangerous monsters, it was also a land of opportunity, where countless treasures awaited. When Sejun, a young man living an ordinary life, is invited to the dungeon by chance, he is thrilled at the prospect of becoming rich, but he is stranded in a hidden area of the mysterious tower. All he has is a few seeds and his body. Now Sejun must farm, collect resources, and figure out his own survival strategy!

A teenager named Evan Mason was reincarnated into the magical world of Harry Potter and goes to school at Hogwarts!
With only his knowledge of the future and great talent for magic, he takes the path towards the top of the magic world, only to realize that ever step he took, changed everything!

- Description from Novelupdates

Lu Zhiguang is not a cannon fodder himself, but his mission is to save the miserable cannon fodder.

Keita Sumeragi was a man of dreams—once a hopeful mangaka who poured his soul into heartfelt tales of romance, comedy, and friendship. But the world never smiled back. Readers ignored him. Publishers laughed. And when the only offer he got was to draw the one thing he hated—NTR (Netorare)—he refused.Until life left him no choice.His wife walked out. His daughter starved. And when his first NTR manuscript was complete, the publisher gave the job to someone else.Broken, guilty, and hollow, Keita leapt from the rooftop with a bitter smile—Only to awaken in the world of his own rejected NTR manga.In this twisted realm, he’s reborn as the main protagonist—handsome, popular, and surrounded by women with all-too-familiar faces. His sweet and kind “motherly” wife resembles the wife who left him. His seductive stepsister has the same eyes as his daughter once did.In this warped erotic hell, where anyone can be seduced—teachers, aunts, even grandmothers—Keita must face his deepest guilt, his darkest fantasies, and the genre he once despised.Because in this world, NTR is fate.And the story must go on.