Gene Island: Superpowered Warriors

A Protagonist Who's a Killer Type, Incredibly Powerful

“With 50 percent profit, it will take desperate risks; with 100 percent profit, it will trample every human law; with 300 percent profit, it will challenge the gods.”

Superpowers Awakened by a Few People, Kept Quiet and Developed Gradually, Set at School

The supernatural ability should preferably involve mutated elemental powers such as ice, lightning, or wind. The protagonist can be in high school or university.

The Protagonist and a Few Others Awaken Special Powers and Join a Secret Organization Without Anyone Finding Out

Something like "Ability Hunters": The protagonist starts out as an ordinary person, then awakens an ability, gets recruited by a mysterious organization, starts carrying out missions, and grows stronger. Nothing where the whole world awakens abilities.

Stories Where Someone Reveals Their Superpower at School, and Superpowered People Are Rare

Modern Protagonist Awakens Powers, Joins a Special Organization, and Protects China

Something along the lines of Slay the Gods.

Spiritual Qi Revival, SSS-Rank Talent, Valued by the State

Legends of the Jianghu: The Con Artist

Let me show you how treacherous human nature can be.

A Student Protagonist With Superpowers Who Joins a Government Organization, Nothing Steamy

The protagonist is a student

Any Urban Ancient Martial Arts Stories With Realms From Postnatal to Martial God?

His family was wiped out, so he went down the mountain to take revenge, only to become a live-in son-in-law.