One Piece – Thundergod Marine - Chapter 138 Manipulator Part 1

Xia Yan passed through to the world of Bleach and became an eleven-year-old boy. He was rescued by Renji and Rukia in the Seireitei, and he was studying at Shin’ō Academy, and he was a student of the same class.
He is a top student of the Shin’ō Academy, and he is vying for strength by various teams. In the end, he has entered the first team of secret mobile maneuvers.
He will use punishment to kill every person who tries to threaten the martyrdom and protect his loved one.

- Description from Novelupdates

I, the protagonist, was just an ordinary NEET, but suddenly I was reincarnated as a tiny white snake in a fantasy world where legendary creatures and gods exist. Not only that, but I awakened in a cave as the offspring of a terrifying Medusa Serpent.Armed with only my human knowledge and my indomitable mental strength, I'm forced to use cunning tactics and rapidly evolving skills to survive against far stronger monsters and humans... So begins the survival story of a former shut-in with incredible willpower, living as one of the lowest-ranked beasts in a world of magic!ᆖMusic suddenly started playing in my head.I'd been waiting for this moment for so long.'Snakes! Assemble'....

Untolerated by heaven, a boy was restricted by the most powerful spell.

He accidentally acquired a painting inhabited by nine souls that claimed to be immortal.

Then, the legend of a strong young man who violated heavenly principles against the course of nature began.

- Description from Novelupdates

“What do you mean by I need to steal MILFs to become stronger!?” Waking up in an unfamiliar body of a Prince, Lucian stares in bewilderment as a transparent panel materializes before him, displaying a message that demands — “You need to steal MILFs to become stronger!” His mind races with confusion. What does that even mean?? As the absurdity of his new reality sinks in, he begins to accept the dark possibilities before him. In his previous life, as a master seducer, no beauty had ever escaped his demonic embrace. Now, with this new body, he savors the thrill of his newfound power. Their desires will become my playground, and their most sacred secrets will be mine to exploit. “You’re the Empress? I’ll grant you a divine body if you submit to me.” “Your lover is a once-in-a-thousand-years genius? So what? I’ll make you a prodigy that comes once in a million.” “Your husband is the sect leader of a powerful immortal sect? Irrelevant. I’ll elevate you to become an immortal goddess.” To claim the fate points of the ’Sons of Heaven,’ Lucian will seduce their cherished ones and drain their divine essence.