Death March kara Hajimaru Isekai Kyusoukyoku (WN) - Book 16 - 16-48. Trial of Zaikuon (3) [Revised]

Ron finds himself reborn in the world of One Piece, stranded on a remote island in the East Blue. But he's not just any ordinary child—he’s bonded to a mysterious sign-in system that grants him powers with every new location he visits.At his first sign-in, he unlocks the legendary Sun Breathing Technique, along with a boost to his vitality. From Shitmotsuki Village to Skypiea, Enies Lobby to Marineford, Ron travels the world, collecting extraordinary rewards that make him a force to be reckoned with. The Raikiri, one of the 21 Great Grade Swords, Armament Haki, Observation Haki, and more fall into his hands.As Ron steps onto the battlefield of Marineford during the legendary Summit War, the mightiest warriors—Four Emperors and Marine Admirals alike—pause, stunned by his presence. But Ron merely waves them off, “Don’t mind me. I’m just passing through.”Join Ron on his journey across the Grand Line as he signs in at iconic locations, growing stronger with every step. This is not just an adventure—it’s a legend in the making.

A dancer who was killed by a serial murderer found himself occupying the body and taking on the life of Brian Morse, a patient with anti-social personality disorder. As Brian, he has the look, he has the brain, he has the charisma, but he also has something that somehow always attracts psychopaths…[The story mentions 3 reality shows and crossovers with the American drama series Dexter. SLASH]

- Description from Novelupdates

Time travelling from the majestic era after the Recuperation of Reiki, he became Kimura Kazuki, a 16-year-old high school student in Japan, one year before the Reiki Recuperation.

Tentatively, he set out to hone himself to the bone, burning candles at both ends to stockpile resources in preparation for the imminent Recuperation of Reiki. His goal was to be many steps ahead of all humanity when the time comes.

However, it seemed like fate had decided to play a cruel trick on him.

One year later, the Recuperation of Reiki… did not happen as expected.

- Description from Novelupdates

‘Yoknapha,’ an international and well-known villainess actress, is suddenly transmigrated into a series she once starred in as ‘Bai Yu,’ a daughter of the senior chancellor. If this world follows the same plot of the story she knows, she will always lose to ‘Bai Hua,’ the heroin.

Nevertheless, if she loses this time, the one who will receive disgrace is not Bai Yu, but Yoknapha herself. That is why this time she will not surrender to the dreadful fate!

If it is determined that a heroine will end up with a hero in every love story, this one has to be different. She will be a villainess who gets to be paired with a hero herself. If wicked deeds bring what she needs, she will stay evil to the end!

That will be easier if a mysterious man Bai Yu does not remember exists does not appear and makes her heart pound like this!