On Our Wedding Night, I Discovered the Crown Prince's Hidden Illness - Chapter 259 - : Gradually Showing Weakness

A man who was once called the world’s strongest agent ended up becoming a teacher after his retirement, to train a new generation of agents. After many years of training his disciples, he was killed at the age of 60 by a secret organization’s ruse and was reincarnated in another world with his memories intact. Though he was surprised by the existence of magic and the strange species in that world, he quickly adapted to his condition as a newborn and took advantage of it. He acquired special magic and gained a massive amount of strength thanks to his rigorous discipline, in order to reach his goal: Resume his career as a teacher which he left halfway through in his previous life. This is the story of a man, who, based on the memories and the experiences of his previous life, became a teacher who travels through the world with his students.

Leon transmigrated and became a lab rat for Hydra. But he ended up awakening the sign-in system.[Ding, sign-in reward: Glint-Glint Fruit(Pika Pika no Mi).]He starts by destroying the Hydra Base.He accumulated some time and got himself another reward![Ding! Get the sign-in reward: Sun Breathing Technique.]

The devilishly charming Villain’s lips curled up and said: “Kiss me, hug me, hold me.”

The cold icy beauty’s eyelashes lowered slightly: “You said you would marry me, you can’t take it back.”

The yandere youngster’s eyes were deep and dark, raising his eyebrows and laughing softly: “Other than my side, where do you still want to go?”

…… Yu Chu felt helpless and could only ask help from the Main God: “My Lord, your soul shards are always flirting with me, but I don’t want to be flirted with, what would you say I should do about it– Huh? Yeah, I really don’t want to be flirted with.”

“Hey, wait wait….. Don’t be angry, hey, don’t feel wronged either, holy crap, don’t act cute and spoiled, okay okay, I will let you flirt, I will let you flirt alright!”

- Description from Novelupdates

“In a twist of fate, Blake finds himself reincarnated into the world of High School DxD, a universe brimming with angels, demons, and supernatural forces. Gifted with the power to plunder luck and travel across worlds, Blake is determined to forge a destiny of unmatched power, endless wealth, and a harem of breathtakingly beautiful women. As he navigates a path filled with powerful allies, fearsome enemies, and thrilling adventures, Blake must uncover his true potential. Will he rise above the challenges and become a legend, or will the lurking darkness claim him?”Ding!“Host has successfully integrated into this world. Activating the Luck Plunder System...”1%... 36%... 78%... 99%... 100%!