YUGIOH: It's Time to Duel! - Chapter 49: Don’t Hate the Player, Hate the Game

He died on the wedding of the girl he had a crush on, after a long and successful career. After convincing Yama to send him back to the world, he decides to fix the areas in which his life went wrong. Realizing the lack of love and romance in his past life, he sets out to conquer the hearts of various women.

- Description from Novelupdates

Almond Crowshade was the last surviving human in a dying world whose people failed to conquer the Grand Abyss Labyrinth’s 30th floor in time. The world was getting destroyed, and Almond was the last one challenging the 30th Floor multiple times despite the imminent destruction of the planet. He ultimately defeated the Floor Boss on his dying breath by achieving a true awakening, acquiring an X-rank Trait that signified limitless potential. Alas, he won but there was no home or future for what he fought. But a mysterious figure arrived there, feeling pity and amusement. “This is too precious and fun of a toy to let it rot here. You shall reincarnate and climb up to make things interesting.” [Transfer to another world commencing…] [Your memories will be sealed, and you will reincarnate in another world that has welcomed Grimworld’s tutorial like this one. Clearing each floor of the Grand Abyss Labyrinth will unlock a portion of your memories, until the 10th Floor upon which you will gain your full memories.] ‘I’m giving you a second chance. This time, you must clear the Grimworld’s tutorial and step onto the big game to make things instresting and entertaining.’ [Good luck.]

After the Catastrophe, every rule in the world was rewritten.

Connor finds himself in a world of spy mages with powers like fire, water, air, earth, and manifestation, all which require using wands. But, there are these powers–powerful powers–that require nothing but their own body. These are called Perks, which are super rare and only go down in certain family lines all around the world. These are many things that occur in the spy mage world.

These spy mages still act like spies. They infiltrate bases and take down ruthless leaders using their powers. They have to keep themselves unknown by the world at risk of being hunted by the government. If they were to be shown to the world, the entire world would be in a war against these people. These things are stuff that Connor never knew existed.

He attends the YMPA academy, where he finds friends and learns how to use his power.

But he finds himself in a war against the MSTO, powerful and evil spy mage corporations that want to steal and create weapons to take over the US and the world. Everyone would be in danger of their tyranny, and they need to be stopped right here and right now. And that mission has been given to Connor to defeat them. Will Connor and his team stop the MSTO and save humanity? What other powers will Connor discover?

Find out in Spy Mage System.

If you’re for a more action-packed story, and this should be good for you. Although there is brief romance, there is some throughout the story—so no need to worry much if you want some romance and relationship in this book.

Character development will happen pretty slowly, so pay close attention.

Hope you enjoy!