One Piece: Seaside System - Chapter 1: Marine Based -

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

I possessed a third-rate villain who died in every route of my favorite game.

But I want to live.

In the Great Chu Kingdom, evil spirits are everywhere.

In this world, there are warriors, Taoists and Buddhas, monsters, and weirdness.

Xu Bai came across time, the hell started, and he was in the cell of a bandit village.

When the danger came, he found that his understanding was not quite right.

[Observe the nameless knife marks on the wall, and comprehend the bone-breaking knife technique. 】

【Observe the forging book, comprehend the forging method】

[Observe the hexagram scriptures and comprehend fortune-telling. 】

When entering the bandit village, Xu Bai tied the chain with his hands, and when leaving the bandit village, Xu Bai carried the ghost knife.

“In this world, there are many things that can be seen. I just know how to observe better than you.” Xu Bai laughed.

- Description from novelbuddy

[Entering the Dungeon: Scarlet Premium Choice][Dungeon type: Solo][Please choose the position you wish to apply for][1. Delivery Driver][2. Stock Clerk][3. Shipping Clerk][4. Receiving Clerk][5. Loader][Detection of host entering the Dungeon, cheat loading successful][Please host, choose one of the following three cheats][1. Purification Template: Possess purification abilities, immune to any pollution][2. Super Brain: Photographic memory, brain processing capabilities multiplied by ten, immune to mental damage][3. Zombie Template: Impenetrable skin, immense strength, bloodthirsty, fearless]...[Entering the Dungeon: Bloody Train][Dungeon type: Large-scale multi-player Dungeon][Number of participants: 30][Detection of host entering the Dungeon, cheat loading successful][Please host, choose one of the following three cheats][1. Infinite Soul Coins: Start with 1000000000000 soul coins, spend at your leisure][2. Hundredfold Amplification: Can amplify a single attribute of yourself by a hundred times, can switch to any attribute at any time][3. Stone Man: You become an ordinary, unremarkable stone with no presence, you can safely pass this instance]Murru Feng realized that his cheats could be refreshed with every Dungeon World.