One Piece : Roger Is My Vice Captain - Chapter 27 - Successfully infiltrating

A bloodsucking mosquito with the soul of a student, seeking revenge, rose from being weak to powerful, step by step from this unassuming life planet 'Earth', becoming a powerful force in the entire universe!Literary version: Reborn as a larva, striving for self-improvement, and ultimately transforming into a terrifying giant mosquito. From then on, I roamed freely across the universe, traveling the vast universe's starry sky!Passionate version: You weak cosmic creatures! I'm using my mouthparts to consume the core nutrients of your mother star. What can you do about it?Funny version: You think I'm disgusting? You hate me because I suck blood? Want to swat me dead with one slap? Just wait, one day I'll stomp your house down!

After being betrayed and killed by his own brother, 17-year-old orphan Elias Black is given a second chance—by a mysterious, demonic entity. Reborn with the “Devil’s System,” he must now collect souls, gain abilities, and exact revenge on those who ruined him.But each power comes with a cost—and the devil never makes a deal without expecting something in return.As Elias grows stronger, unlocking deadly skills and forming uneasy alliances, he faces an even darker truth: his rebirth is part of a much bigger, bloodier plan.

Aidan was thrust into this word of death and magic against his will. He was weak, Frail and pathetic but his unyielding hardwork led him to the peak where he sits unrivaled, Now he tries to find other ways to cure his unending bordom.Netorase—Netorare—Overpowered—Harem—Elf’s—Giants—Incest—

The well-known and recognized throughout the Stern continent, strong and mighty, as well as the unique Wizard of magic cures, the most outstanding genius of the whole continent, Jason got into the flow of time, back in the uncivilized era during the first failed experiment, 3000 years ago. This was the period when the magic healers didn’t exist. How will Jason apply his knowledge in this backward era, wherever he reach the peak of glory?

- Description from Novelupdates