In the World of Sword and Magic as Space Marine - Chapter 111: Legend of Eleanor Rose Cain

Perhaps it is the choice of fate. As a senior otaku, Qian Lingfeng got the “steel shell system”. However, when he swept the world with the system, became a local rich man, made all kinds of beautiful women, opened a harem, and realized the ultimate fantasy of thousands of otaku, he found that things seemed far from simple!
When the end comes, biochemical zombies suddenly come down, fierce beasts are in power, bloodthirsty zerg roam to kill the world, and human lives are comparable to dirt. Where will weak human beings go in this world? Is humanity going to be extinct? Or … can an otaku save the fate of the human race?

- Description from Novelupdates

Elias “Grim” Kingsley, a nine-year-old orphan with a hardened heart and sharp tongue, dies alone from pneumonia in an overcrowded orphanage. Known for his perpetual scowl and biting remarks, he's labeled a “problem child” by caretakers and “damaged goods” by potential adopters. Years of rejection have built thick armor around his young heart.In death, he encounters the God of Balance who offers him a second chance at life in a different world—this time as Grim Van Ambrose, son of a noble house. Balance explains that every soul deserves to know love and connection, something Elias was cruelly denied in his first life.Promised the family and belonging he never experienced, Grim begins his new life only to suffer an immediate tragedy: his mother dies moments after his birth. This cruel twist of fate reinforces his belief that loss is inevitable, leaving him with a distant father and the mysterious voice of a “Guidance Assistant” in his head.As Grim grows into his new identity, he struggles with his dual nature—the emotional scars of his past life bleeding into his present one. His difficult personality and sharp tongue remain, now paired with noble privilege and expectations. Despite his outward brashness, he carries the deep wounds of his first life and the fresh loss that welcomed him into his second.What begins as one orphan's second chance evolves into an epic journey through a world of ancient beasts, elemental magic, and deadly political intrigue. As Grim uncovers the truth about the Ambrose Clan's fall from grace and the conspiracy that framed them for treason, he faces increasingly dangerous adversaries—both human and monstrous. His quest for revenge against those who destroyed his family's legacy will challenge him to master forbidden techniques, forge unexpected alliances, and ultimately decide whether to rebuild the Ambrose Clan as it was, or transform it into something entirely new.In a realm where power determines survival and ancient secrets lurk beneath noble facades, Grim must learn that sometimes the greatest battles aren't fought with swords, but with the choices that define who we truly are.

I was a 28-year-old researcher in Japan, and before I knew it, I have been reincarnated in a fantasy world.

Furthermore, I had a half-spirit father and a spirit mother.

An aunt who is deeply attached to father, cousins who are problem children. Girls who cause awkward situations as in an otome.

Furthermore, in order to gain the affection of a love interest, a cousin even had a word battle with a king!

I am very busy helping humans as well as spirits!

And when I find people who are targeting my father,

「I’ll crush you.」

The cheat protagonist deters those who aim at her family. This is such a story.

21st century kid got onto a virtual game 600 years into the future, with a freak combination of events gets to play as a NPC!

The first system job is to undertake the roles of helping new players create their character. Want to choose as one of the hidden race? OK, this is a slavery contract, up to you to sign it or not!

Entering the game as a player and creating a personal game character, the only advantage I have… The choice of selecting a powerful race!

Walking alone to the peak, bringing the present world to advance by leaps and bounds, the abnormal path starts from this first step!

- Description from Novelupdates