MTL - The Crazy Adventures of Wu Gate - Chapter 45 Rokko

[The 3000th Descent of Mystery is about to begin.][This is your only chance to redeem yourself.]When the whole world was in danger, Wang Teng activated a unique talent.It was the Rank SSS talent - Inequivalent Exchange!He was not purchasing things for free, but the exchange was not equivalent.[Exchange successfully. You used half a bowl of cup noodles. With your Rank SSS talent, you may retrieve an unlimited supply of cup noodles.][Exchange successfully. You used a bottle of Sad Breeze wine to exchange for the Star Shifting Method.]…From then on, Wang Teng activated a new exchange system.

A skilled but unfortunate modern-day assassin was killed in a freak accident. However, he soon found himself summoned to another world by an evil wizard, who had him possess the body of a boy as an experiment. After successfully planning the evil wizard’s downfall, he used the wizard’s body as a springboard to gain influence and power in his new world.

- Description from Novelupdates

David thought he would live a normal life when he awakened the banking system at the age of 18.However, fate seemed to have something else in store for him as his life turned upside down when following the death of one of his loyal client, a shiny window popped up in front of him.[Regretfully! You lost one of your clients today. However, the Bank of Eternal Origin can never suffer a loss.Even if he died, the client will have to pay back somehow, therefore his soul was captured. You now have the following options, keep in mind that you can only choose one.1 - Extract Client's Crystallion of Life (Money Talks, Grade - Uncommon)2 - Extract Bryan's memories from his birth till his death.3 - Any item that client owned in his lifetime.4- Do Nothing, let the compound interest do its thing and decide again when the Client dies in his next life.Please note as capturing the soul and imprisoning it requires a large amount of mana because of which you only have two hours left to make a choice.]

As a promise, he went out into the world as an assassin. 3 years later, after becoming the Supreme Assassin, he gave up on everything he had and returned to the ranks of ordinary people. But one day, Kismet, a mystical game created by the National Research and Development had appeared.