Athelgard: A new world

Reiza was just an ordinary high school boy with a heavy secret: he was the son of a master conman. He hated his father's deceitful ways, but he couldn't unlearn the inherited ability to read micro-expressions, spot lies, and subtly steer conversations. When he died saving his classmate from a speeding truck, his final thought was one of deep regret for his selfish, manipulative past. He vowed that if given a second chance, he would atone and become a better person.
Reincarnated into Aethelgard-a sprawling medieval fantasy world of floating islands, deadly dungeons, and diverse races-he retains his teenage appearance and a clean, silent LitRPG interface. There is no chatty AI, no forced quests, and no mindless power fantasy. The System is merely a tool, and Reiza intends to use it with ruthless pragmatism. Combining his kendo club discipline with his inherited social skills, he navigates this dangerous world not with blind luck, but with smart problem-solving, efficient grinding, and calculated risk.

But Aethelgard is unforgiving. Forced to choose his path, Reiza must carefully strategize his growth. From hunting wild beasts and setting snares to navigating the local economy and delving into mana-rich dungeons, every step is a deliberate move toward survival and strength.
Yet, he isn't the only one who crossed over.

In a world governed by hard stats and unforgiving rules, one pragmatic reincarnator will grind, adapt, and atone. This is not the story of a chosen hero, but of a survivor forging his own legend.

It a slow, progressing story. We will follow the journey of main character step by step within this new world.

Disclaimer: This story contain AI. Most of the idea come from the 'author'. I have the idea but not the skill to write a proper novel. I use AI to fill the gap and expand the story. If I do it myself, it will be too short and the English will be terrible. (I'm ESL)